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A potentiometer having the potential gra...

A potentiometer having the potential gradient of `2 mV//cm` is used to measure the difference of potential across a resistance of `10 ohm`. If a length of `50 cm` of the potentiometer wire is required to get null point, the current passing through the `10 ohm` resistor is (in `mA`)

A

1

B

2

C

5

D

10

Text Solution

Verified by Experts

The correct Answer is:
D
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ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
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