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Question: In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflectio...

In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is doubled?

A

x

B

x/4

C

4x

D

2x

Answer

x

Explanation

Solution

By changing thickness of wire resistance of wire changes but ratio of RACRCB\frac { \mathrm { R } _ { \mathrm { AC } } } { \mathrm { R } _ { \mathrm { CB } } } does not change.