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If the current in the primary circuit of...

If the current in the primary circuit of a potentiometer wire of specific resistance is `40 xx 10^(-8)Omega` -m and area of cross-section `8 xx 10^(-6)m^(2)` is 0.5 amp. Then potential gradient of wire is –

A

V/m

B

0.5 V/m

C

0.1 V/m

D

0.2 V/m

Text Solution

Verified by Experts

The correct Answer is:
C
`V = irhol`
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