A wire of length and radius connected across the right ga… | CGP Edu

Physics Current Electricity Wheatstone Bridge Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: September 12, 2026

A wire of length and radius connected across the right gap of a meter bridge. When a resistance of is connected on the left gap by using a resistance box, the balance length is found to be at from the left end. If the resistivity of the wire is , then value of R is:

A

63

B

70

C

66

D

35

Text Solution

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The correct answer is:

For null point,

Also,

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