Published by:
CGP EDU Academic Team
Published on: September 12, 2026
In a metre-bridge when a resistance in the left gap is 
and unknown resistance in the right gap, the balance length is found to be 
. On shunting the unknown resistance with 
, the balance length changes by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
First case 
In second case 
Balance length changes by 
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