Class 10 Science Electricity Important Questions and Answers
Ohm’s law, series-parallel, power.
Practice questions aligned to NCERT topics used in CBSE classrooms. These are original exam-oriented questions for revision — not official CBSE board papers and not a guarantee of any exam question. Always match the textbook issued by your school and the latest PDFs on ncert.nic.in and cbseacademic.nic.in.
Answers opened: 0
1. Chapter introduction
Electricity is Chapter 11 in Class 10 Science (NCERT Science (rationalised)). Read the textbook first, then use the 100 questions below as revision — not as a substitute for NCERT examples.
2. Chapter summary
Ohm’s law, series-parallel, power.
3. Important concepts
Electric current. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere.
Ohm’s law. Ohm’s law: V = IR when physical conditions such as temperature stay constant.
Resistance. Resistance of a conductor R = ρl/A.
Series combination. In series, the same current flows and total resistance is the sum of resistances.
Parallel combination. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + ….
Electric power. Electric power P = VI = I²R = V²/R.
kWh. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J.
Potential difference. Potential difference is work done per unit charge, V = W/Q, SI unit volt.
Electricity. I = Q/t.
Electricity. V = IR (Ohm’s law, temperature constant).
Choose the correct statement related to Electric current in the chapter Electricity.
A. Resistance of a conductor R = ρl/A
B. I = Q/t
C. Electric power P = VI = I²R = V²/R
D. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
Answer
D. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
Explanation
Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q2MCQ1 markEasy
Choose the correct statement related to Ohm’s law in the chapter Electricity.
A. V = IR (Ohm’s law, temperature constant)
B. In series, the same current flows and total resistance is the sum of resistances
C. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
D. Ohm’s law: V = IR when physical conditions such as temperature stay constant
Answer
D. Ohm’s law: V = IR when physical conditions such as temperature stay constant
Explanation
Ohm’s law: V = IR when physical conditions such as temperature stay constant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q3MCQ1 markEasy
Choose the correct statement related to Resistance in the chapter Electricity.
A. Resistance of a conductor R = ρl/A
B. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
C. Potential difference is work done per unit charge, V = W/Q, SI unit volt
D. Series: R = R1+R2
Answer
A. Resistance of a conductor R = ρl/A
Explanation
Resistance of a conductor R = ρl/A. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q4MCQ1 markEasy
Choose the correct statement related to Series combination in the chapter Electricity.
A. Parallel: 1/R = 1/R1+1/R2
B. I = Q/t
C. Electric power P = VI = I²R = V²/R
D. In series, the same current flows and total resistance is the sum of resistances
Answer
D. In series, the same current flows and total resistance is the sum of resistances
Explanation
In series, the same current flows and total resistance is the sum of resistances. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q5MCQ1 markModerateRevision pick
Choose the correct statement related to Parallel combination in the chapter Electricity.
A. V = IR (Ohm’s law, temperature constant)
B. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
C. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
D. P = VI = I²R = V²/R
Answer
C. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
Explanation
In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q6MCQ1 markEasy
Choose the correct statement related to Electric power in the chapter Electricity.
A. Potential difference is work done per unit charge, V = W/Q, SI unit volt
B. Series: R = R1+R2
C. Electric power P = VI = I²R = V²/R
D. This idea is not part of the NCERT chapter
Answer
C. Electric power P = VI = I²R = V²/R
Explanation
Electric power P = VI = I²R = V²/R. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q7MCQ1 markEasy
Choose the correct statement related to kWh in the chapter Electricity.
A. Parallel: 1/R = 1/R1+1/R2
B. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
C. I = Q/t
D. The textbook says the opposite of this statement
Answer
B. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
Explanation
One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q8MCQ1 markEasy
Choose the correct statement related to Potential difference in the chapter Electricity.
A. P = VI = I²R = V²/R
B. Potential difference is work done per unit charge, V = W/Q, SI unit volt
C. This happens only in a laboratory and never in daily life
D. V = IR (Ohm’s law, temperature constant)
Answer
B. Potential difference is work done per unit charge, V = W/Q, SI unit volt
Explanation
Potential difference is work done per unit charge, V = W/Q, SI unit volt. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q9MCQ1 markEasyRevision pick
Choose the correct statement related to Electricity in the chapter Electricity.
A. Series: R = R1+R2
B. This idea is not part of the NCERT chapter
C. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
D. I = Q/t
Answer
D. I = Q/t
Explanation
I = Q/t. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q10MCQ1 markModerate
Choose the correct statement related to Electricity in the chapter Electricity.
A. The textbook says the opposite of this statement
B. V = IR (Ohm’s law, temperature constant)
C. Parallel: 1/R = 1/R1+1/R2
D. Ohm’s law: V = IR when physical conditions such as temperature stay constant
Answer
B. V = IR (Ohm’s law, temperature constant)
Explanation
V = IR (Ohm’s law, temperature constant). The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q11MCQ1 markEasy
Choose the correct statement related to Series in the chapter Electricity.
A. P = VI = I²R = V²/R
B. Resistance of a conductor R = ρl/A
C. Series: R = R1+R2
D. This happens only in a laboratory and never in daily life
Answer
C. Series: R = R1+R2
Explanation
Series: R = R1+R2. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q12MCQ1 markEasy
Choose the correct statement related to Parallel in the chapter Electricity.
A. Parallel: 1/R = 1/R1+1/R2
B. In series, the same current flows and total resistance is the sum of resistances
C. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
D. This idea is not part of the NCERT chapter
Answer
A. Parallel: 1/R = 1/R1+1/R2
Explanation
Parallel: 1/R = 1/R1+1/R2. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q13MCQ1 markEasyRevision pick
Choose the correct statement related to Electricity in the chapter Electricity.
A. The textbook says the opposite of this statement
B. P = VI = I²R = V²/R
C. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
D. Ohm’s law: V = IR when physical conditions such as temperature stay constant
Answer
B. P = VI = I²R = V²/R
Explanation
P = VI = I²R = V²/R. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q14MCQ1 markEasy
Choose the correct statement related to Electric current in the chapter Electricity.
A. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
B. This happens only in a laboratory and never in daily life
C. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
D. In series, the same current flows and total resistance is the sum of resistances
Answer
C. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
Explanation
Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q15MCQ1 markModerate
Choose the correct statement related to Ohm’s law in the chapter Electricity.
A. Ohm’s law: V = IR when physical conditions such as temperature stay constant
B. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
C. Potential difference is work done per unit charge, V = W/Q, SI unit volt
D. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere
Answer
A. Ohm’s law: V = IR when physical conditions such as temperature stay constant
Explanation
Ohm’s law: V = IR when physical conditions such as temperature stay constant. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q16MCQ1 markEasy
Choose the correct statement related to Resistance in the chapter Electricity.
A. Electric power P = VI = I²R = V²/R
B. Ohm’s law: V = IR when physical conditions such as temperature stay constant
C. I = Q/t
D. Resistance of a conductor R = ρl/A
Answer
D. Resistance of a conductor R = ρl/A
Explanation
Resistance of a conductor R = ρl/A. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q17MCQ1 markEasyRevision pick
Choose the correct statement related to Series combination in the chapter Electricity.
A. In series, the same current flows and total resistance is the sum of resistances
B. V = IR (Ohm’s law, temperature constant)
C. Resistance of a conductor R = ρl/A
D. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
Answer
A. In series, the same current flows and total resistance is the sum of resistances
Explanation
In series, the same current flows and total resistance is the sum of resistances. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q18MCQ1 markEasy
Choose the correct statement related to Parallel combination in the chapter Electricity.
A. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
B. In series, the same current flows and total resistance is the sum of resistances
C. Series: R = R1+R2
D. Potential difference is work done per unit charge, V = W/Q, SI unit volt
Answer
A. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
Explanation
In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q19MCQ1 markEasy
Choose the correct statement related to Electric power in the chapter Electricity.
A. Parallel: 1/R = 1/R1+1/R2
B. I = Q/t
C. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …
D. Electric power P = VI = I²R = V²/R
Answer
D. Electric power P = VI = I²R = V²/R
Explanation
Electric power P = VI = I²R = V²/R. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q20MCQ1 markModerate
Choose the correct statement related to kWh in the chapter Electricity.
A. Electric power P = VI = I²R = V²/R
B. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
C. V = IR (Ohm’s law, temperature constant)
D. P = VI = I²R = V²/R
Answer
B. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J
Explanation
One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. The other options mix ideas from nearby topics or reverse the textbook fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q211 Mark1 markEasy
Define or state: Potential difference.
Answer
Potential difference is work done per unit charge, V = W/Q, SI unit volt.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q221 Mark1 markEasy
Define or state: Electricity.
Answer
I = Q/t.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q231 Mark1 markEasy
Define or state: Electricity.
Answer
V = IR (Ohm’s law, temperature constant).
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q241 Mark1 markEasy
Define or state: Series.
Answer
Series: R = R1+R2.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q251 Mark1 markModerate
Define or state: Parallel.
Answer
Parallel: 1/R = 1/R1+1/R2.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q261 Mark1 markEasy
Define or state: Electricity.
Answer
P = VI = I²R = V²/R.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q271 Mark1 markEasy
Define or state: Electric current.
Answer
Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q281 Mark1 markEasy
Define or state: Ohm’s law.
Answer
Ohm’s law: V = IR when physical conditions such as temperature stay constant.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q291 Mark1 markEasy
Define or state: Resistance.
Answer
Resistance of a conductor R = ρl/A.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q301 Mark1 markModerate
Define or state: Series combination.
Answer
In series, the same current flows and total resistance is the sum of resistances.
Explanation
A one-mark answer should use the textbook term and one clear fact — not a long paragraph.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q312 Mark2 marksModerate
Give two points to explain Parallel combination as used in Electricity.
Answer
1. In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + ….
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q322 Mark2 marksDifficult
Give two points to explain Electric power as used in Electricity.
Answer
1. Electric power P = VI = I²R = V²/R.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q332 Mark2 marksModerate
Give two points to explain kWh as used in Electricity.
Answer
1. One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q342 Mark2 marksModerate
Give two points to explain Potential difference as used in Electricity.
Answer
1. Potential difference is work done per unit charge, V = W/Q, SI unit volt.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q352 Mark2 marksModerate
Give two points to explain Electricity as used in Electricity.
Answer
1. I = Q/t.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q362 Mark2 marksDifficult
Give two points to explain Electricity as used in Electricity.
Answer
1. V = IR (Ohm’s law, temperature constant).
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q372 Mark2 marksModerate
Give two points to explain Series as used in Electricity.
Answer
1. Series: R = R1+R2.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q382 Mark2 marksModerate
Give two points to explain Parallel as used in Electricity.
Answer
1. Parallel: 1/R = 1/R1+1/R2.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q392 Mark2 marksModerate
Give two points to explain Electricity as used in Electricity.
Answer
1. P = VI = I²R = V²/R.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q402 Mark2 marksDifficult
Give two points to explain Electric current as used in Electricity.
Answer
1. Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere.
2. Keep the NCERT wording and add one daily-life example from the same chapter.
Explanation
Two-mark answers work best as two numbered points. One definition plus one example is usually enough.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q413 Mark3 marksModerateRevision pick
Explain Ohm’s law in about three points, with one example.
Answer
Ohm’s law: V = IR when physical conditions such as temperature stay constant. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q423 Mark3 marksModerate
Explain Resistance in about three points, with one example.
Answer
Resistance of a conductor R = ρl/A. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q433 Mark3 marksModerate
Explain Series combination in about three points, with one example.
Answer
In series, the same current flows and total resistance is the sum of resistances. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q443 Mark3 marksDifficult
Explain Parallel combination in about three points, with one example.
Answer
In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q453 Mark3 marksModerateRevision pick
Explain Electric power in about three points, with one example.
Answer
Electric power P = VI = I²R = V²/R. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q463 Mark3 marksModerate
Explain kWh in about three points, with one example.
Answer
One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q473 Mark3 marksModerate
Explain Potential difference in about three points, with one example.
Answer
Potential difference is work done per unit charge, V = W/Q, SI unit volt. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q483 Mark3 marksDifficult
Explain Electricity in about three points, with one example.
Answer
I = Q/t. Example: Use a situation from the NCERT activity or a labelled diagram in this chapter.
Explanation
Three-mark questions want a short explanation, not a full essay. Link the idea to a figure or an activity.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q494 Mark4 marksModerate
Write a long answer on Electricity. Include definition, explanation and one application.
Answer
Electricity — V = IR (Ohm’s law, temperature constant). Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q504 Mark4 marksModerate
Write a long answer on Series. Include definition, explanation and one application.
Answer
Series — Series: R = R1+R2. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q514 Mark4 marksModerate
Write a long answer on Parallel. Include definition, explanation and one application.
Answer
Parallel — Parallel: 1/R = 1/R1+1/R2. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q524 Mark4 marksDifficult
Write a long answer on Electricity. Include definition, explanation and one application.
Answer
Electricity — P = VI = I²R = V²/R. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q534 Mark4 marksModerate
Write a long answer on Electric current. Include definition, explanation and one application.
Answer
Electric current — Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q544 Mark4 marksModerate
Write a long answer on Ohm’s law. Include definition, explanation and one application.
Answer
Ohm’s law — Ohm’s law: V = IR when physical conditions such as temperature stay constant. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q555 Mark5 marksModerate
Write a long answer on Resistance. Include definition, explanation and one application.
Answer
Resistance — Resistance of a conductor R = ρl/A. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q565 Mark5 marksModerate
Write a long answer on Series combination. Include definition, explanation and one application.
Answer
Series combination — In series, the same current flows and total resistance is the sum of resistances. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q575 Mark5 marksDifficultRevision pick
Write a long answer on Parallel combination. Include definition, explanation and one application.
Answer
Parallel combination — In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q585 Mark5 marksModerate
Write a long answer on Electric power. Include definition, explanation and one application.
Answer
Electric power — Electric power P = VI = I²R = V²/R. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q595 Mark5 marksModerate
Write a long answer on kWh. Include definition, explanation and one application.
Answer
kWh — One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q605 Mark5 marksDifficult
Write a long answer on Potential difference. Include definition, explanation and one application.
Answer
Potential difference — Potential difference is work done per unit charge, V = W/Q, SI unit volt. Explain the idea in order (definition → working → result). End with one application from daily life or a numerical/diagram if the chapter has one.
Explanation
Long answers are marked for structure. Use headings or numbered steps so the examiner can see each part.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q61Assertion and Reason1 markModerate
Assertion (A): I = Q/t.
Reason (R): Electricity is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q62Assertion and Reason1 markModerate
Assertion (A): V = IR (Ohm’s law, temperature constant).
Reason (R): Electricity is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q63Assertion and Reason1 markModerate
Assertion (A): Series: R = R1+R2.
Reason (R): Series is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q64Assertion and Reason1 markDifficult
Assertion (A): Parallel: 1/R = 1/R1+1/R2.
Reason (R): Parallel is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q65Assertion and Reason1 markModerate
Assertion (A): P = VI = I²R = V²/R.
Reason (R): Electricity is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q66Assertion and Reason1 markModerate
Assertion (A): Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere.
Reason (R): Electric current is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q67Assertion and Reason1 markModerate
Assertion (A): Ohm’s law: V = IR when physical conditions such as temperature stay constant.
Reason (R): Ohm’s law is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q68Assertion and Reason1 markDifficult
Assertion (A): Resistance of a conductor R = ρl/A.
Reason (R): Resistance is a key idea in the chapter Electricity.
Choose the correct option.
A. Both A and R are true, and R is the correct explanation of A.
B. Both A and R are true, and R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Answer
A. Both A and R are true, and R is the correct explanation of A.
Explanation
Read Assertion and Reason separately first. Here both match the textbook idea, and R explains why A is taught in this chapter.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q69Case Based4 marksModerateRevision pick
A student is revising Electricity and notes: “In series, the same current flows and total resistance is the sum of resistances.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Series combination.
(ii) In series, the same current flows and total resistance is the sum of resistances.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q70Case Based4 marksModerate
A student is revising Electricity and notes: “In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + ….” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Parallel combination.
(ii) In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + ….
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q71Case Based4 marksModerate
A student is revising Electricity and notes: “Electric power P = VI = I²R = V²/R.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Electric power.
(ii) Electric power P = VI = I²R = V²/R.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q72Case Based4 marksDifficult
A student is revising Electricity and notes: “One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) kWh.
(ii) One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q73Case Based4 marksModerateRevision pick
A student is revising Electricity and notes: “Potential difference is work done per unit charge, V = W/Q, SI unit volt.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Potential difference.
(ii) Potential difference is work done per unit charge, V = W/Q, SI unit volt.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q74Case Based4 marksModerate
A student is revising Electricity and notes: “I = Q/t.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Electricity.
(ii) I = Q/t.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q75Case Based4 marksModerate
A student is revising Electricity and notes: “V = IR (Ohm’s law, temperature constant).” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Electricity.
(ii) V = IR (Ohm’s law, temperature constant).
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q76Case Based4 marksDifficult
A student is revising Electricity and notes: “Series: R = R1+R2.” Using this case, answer: (i) Name the idea. (ii) State it in your own words. (iii) Give one classroom or daily-life use.
Answer
(i) Series.
(ii) Series: R = R1+R2.
(iii) Apply it in a school experiment, a labelled diagram, or a situation described in the NCERT chapter.
Explanation
Case-based items recycle a short story. Pull the fact out first, then apply it. This is original practice in CBSE case style — not a copied board paper.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q77Competency Based3 marksModerateRevision pick
Competency practice: A classmate can recall the heading Parallel but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Parallel: 1/R = 1/R1+1/R2. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q78Competency Based3 marksDifficult
Competency practice: A classmate can recall the heading Electricity but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — P = VI = I²R = V²/R. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q79Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Electric current but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q80Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Ohm’s law but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Ohm’s law: V = IR when physical conditions such as temperature stay constant. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q81Competency Based3 marksDifficultRevision pick
Competency practice: A classmate can recall the heading Resistance but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Resistance of a conductor R = ρl/A. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q82Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Series combination but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — In series, the same current flows and total resistance is the sum of resistances. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q83Competency Based3 marksModerate
Competency practice: A classmate can recall the heading Parallel combination but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q84Competency Based3 marksDifficult
Competency practice: A classmate can recall the heading Electric power but cannot explain it. How will you teach it in two steps using the textbook idea?
Answer
Step 1: State the fact — Electric power P = VI = I²R = V²/R. Step 2: Show one example or diagram from the chapter and ask the classmate to repeat it in their own words.
Explanation
Competency-based items check whether you can use a concept, not only name it. Teach-back is a simple way to prove understanding.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q85Application Based3 marksModerate
Apply the idea of kWh to a real situation you might meet in school or daily life.
Answer
One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q86Application Based3 marksModerate
Apply the idea of Potential difference to a real situation you might meet in school or daily life.
Answer
Potential difference is work done per unit charge, V = W/Q, SI unit volt. Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q87Application Based3 marksModerate
Apply the idea of Electricity to a real situation you might meet in school or daily life.
Answer
I = Q/t. Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q88Application Based3 marksDifficult
Apply the idea of Electricity to a real situation you might meet in school or daily life.
Answer
V = IR (Ohm’s law, temperature constant). Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q89Application Based3 marksModerate
Apply the idea of Series to a real situation you might meet in school or daily life.
Answer
Series: R = R1+R2. Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q90Application Based3 marksModerate
Apply the idea of Parallel to a real situation you might meet in school or daily life.
Answer
Parallel: 1/R = 1/R1+1/R2. Use this fact to explain a real object, habit, experiment or measurement from the chapter.
Explanation
Application questions reward a specific situation. Name the place (kitchen, playground, lab) and connect it to the fact.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q91HOTS3 marksModerate
HOTS: If someone ignored the idea “P = VI = I²R = V²/R”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: P = VI = I²R = V²/R. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q92HOTS3 marksModerate
HOTS: If someone ignored the idea “Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: Electric current is the rate of flow of charge, I = Q/t, and its SI unit is ampere. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q93HOTS3 marksDifficultRevision pick
HOTS: If someone ignored the idea “Ohm’s law: V = IR when physical conditions such as temperature stay constant”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: Ohm’s law: V = IR when physical conditions such as temperature stay constant. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q94HOTS3 marksModerate
HOTS: If someone ignored the idea “Resistance of a conductor R = ρl/A”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: Resistance of a conductor R = ρl/A. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q95HOTS3 marksModerate
HOTS: If someone ignored the idea “In series, the same current flows and total resistance is the sum of resistances”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: In series, the same current flows and total resistance is the sum of resistances. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q96HOTS3 marksDifficult
HOTS: If someone ignored the idea “In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …”, what mistake could they make while solving a question from Electricity?
Answer
They would use the wrong term or the reverse relation. Remember: In parallel, voltage is the same and 1/Rp = 1/R1 + 1/R2 + …. Always check the NCERT definition before jumping to a formula or a long explanation.
Explanation
HOTS items ask you to predict an error. That is still chapter revision — not a claim that this exact wording will appear in the board exam.
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Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q97NCERT-style2 marksModerate
NCERT-style exercise: In your own words, write what the chapter teaches about Electric power.
Answer
Electric power P = VI = I²R = V²/R. Keep the answer as short as the in-text questions in the textbook.
Explanation
This is original practice in the style of NCERT in-text/exercise questions. It is not copied from any solutions website.
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Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q98NCERT-style2 marksModerate
NCERT-style exercise: In your own words, write what the chapter teaches about kWh.
Answer
One kilowatt-hour is the energy used by 1 kW in 1 hour, equal to 3.6 × 10⁶ J. Keep the answer as short as the in-text questions in the textbook.
Explanation
This is original practice in the style of NCERT in-text/exercise questions. It is not copied from any solutions website.
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Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q99NCERT-style2 marksModerate
NCERT-style exercise: In your own words, write what the chapter teaches about Potential difference.
Answer
Potential difference is work done per unit charge, V = W/Q, SI unit volt. Keep the answer as short as the in-text questions in the textbook.
Explanation
This is original practice in the style of NCERT in-text/exercise questions. It is not copied from any solutions website.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
Q100NCERT-style2 marksDifficult
NCERT-style exercise: In your own words, write what the chapter teaches about Electricity.
Answer
I = Q/t. Keep the answer as short as the in-text questions in the textbook.
Explanation
This is original practice in the style of NCERT in-text/exercise questions. It is not copied from any solutions website.
Meta
Class: Class 10 · Subject: Science · Chapter: Electricity · Original GKSchools practice (NCERT-aligned, not an official CBSE paper).
22. Quick revision
Close the answers. Recite three concepts from the list. Then retry ten MCQs and one long answer. That loop is enough for a school test night.
FAQs
Are these official CBSE board questions?
No. They are original practice questions aligned to NCERT topics used in CBSE classrooms. Official sample papers are published on cbseacademic.nic.in.
Will these questions appear in the board exam?
Nobody can promise a question. Use them for revision of frequently tested concepts and exam-style practice.
Is the chapter list the latest NCERT list?
Yes, the catalog follows current NCERT textbooks used in CBSE schools (including new middle-stage books such as Ganita Prakash and Curiosity). Always match the book issued by your school.
How should I use the 100 questions?
Try the question first, then tap Show answer. Mix MCQs with long answers. Revise formulas and diagrams from the textbook alongside this set.
Where are NCERT solutions?
Open the NCERT-style practice link on this subject or chapter. For word-for-word textbook exercise answers, use the NCERT book itself; we do not copy solution keys from other websites.
What is the suggested URL pattern?
Hub /cbse/, then /cbse/class-10/, then subject and chapter slugs.
