Electric Current and Ohm's Law - Practice Questions

Question 1

The resistance of a wire of length doubled and area halved will be

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Question 2

The instrument used to measure current is

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Question 3

The power dissipated in a resistor of 4 Ω carrying 3 A current is

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Question 4

Resistance of a conductor depends on

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Question 5

The reciprocal of resistance is known as

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Question 6

When the temperature of a metallic conductor increases, its resistance

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Question 7

The device used to change resistance in a circuit is

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Question 8

Which law states that current through a conductor is directly proportional to voltage across it?

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Question 9

If resistance increases, for a constant voltage, current will

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Question 10

The power consumed by a resistor is given by

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