Question Paper
Class / Subject: Class 10 (ICSE) · Physics
Chapter: Chapter 8 — Chapter 8: Current Electricity
Time Allowed: 32 minutes
Max Marks: 16
1. What does Ohm's law state? [1]
(A) V = IR
(B) V = I+R
(C) V = I/R
(D) V = I-R
2. What is the resistance formula? [1]
(A) R = ρL/A
(B) R = ρ/LA
(C) R = ρLA
(D) R = L/ρA
3. How do resistances combine in series? [1]
(A) They add directly (R=R₁+R₂)
(B) Reciprocals add
(C) They multiply
(D) They cancel out
4. How do resistances combine in parallel? [1]
(A) Reciprocals add (1/R=1/R₁+1/R₂)
(B) They add directly
(C) They multiply
(D) They cancel out
5. What is the power formula? [1]
(A) P = VI
(B) P = V+I
(C) P = V-I
(D) P = V/I only
6. How is electrical energy calculated? [1]
(A) Power × time
(B) Power ÷ time
(C) Power + time
(D) Power - time
7. What condition must hold for Ohm's law? [1]
(A) Constant temperature
(B) Constant current only
(C) Constant resistance only
(D) No specific condition
8. Why learn current electricity concepts? [1]
(A) To calculate electricity usage and circuits
(B) No reason
(C) It's not useful
(D) Only for tests
9. What does Ohm's law state? [1]
(A) V = IR
(B) V = I+R
(C) V = I/R
(D) V = I-R
10. What is the resistance formula? [1]
(A) R = ρL/A
(B) R = ρ/LA
(C) R = ρLA
(D) R = L/ρA
11. How do resistances combine in series? [1]
(A) They add directly (R=R₁+R₂)
(B) Reciprocals add
(C) They multiply
(D) They cancel out
12. How do resistances combine in parallel? [1]
(A) Reciprocals add (1/R=1/R₁+1/R₂)
(B) They add directly
(C) They multiply
(D) They cancel out
13. What is the power formula? [1]
(A) P = VI
(B) P = V+I
(C) P = V-I
(D) P = V/I only
14. How is electrical energy calculated? [1]
(A) Power × time
(B) Power ÷ time
(C) Power + time
(D) Power - time
15. What condition must hold for Ohm's law? [1]
(A) Constant temperature
(B) Constant current only
(C) Constant resistance only
(D) No specific condition
16. Why learn current electricity concepts? [1]
(A) To calculate electricity usage and circuits
(B) No reason
(C) It's not useful
(D) Only for tests