Home > Physics > Ohms Law

Ohms Law - Questions and Answers

Practice questions on Ohms Law.

Ready to test your skills?

Take a timed mock test specifically for Ohms Law.

Start Mock Test
1. The bulb is labeled as 250 V, 100 W. What is the resistance of the filament of the bulb in ohm
A. 350
B. 625
C. 150
D. 25000
Explanation:
2. Two resistors each of resistance 6 Ω are connected in parallel and the combination in series with a resistor of resistance 2 Ω and an accumulator of emf 2 Ω. The current in the circuit is
A. 1/7 A
B. 2.5 A
C. 0.4 A
D. 7 A
Explanation:
3. A resistance wire is made into 5 equal parts and all the five parts are connected in parallel. What is the ratio of the effective resistance to the original resistance
A. 1/5
B. 1/10
C. 1/25
D. 10
Explanation:
4. The specific resistance of a wire depends on
A. its radius
B. Its length
C. the material of the wire
D. its shape
Explanation:
5. A tape recorder is marked as 6 V and 300 mA. If the voltage drops to 5V, the decrease in current of the tape recorder is
A. 250 mA
B. 200 mA
C. 50 A
D. 50 mA
Explanation: