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In the following Wheatstone bridge P//Q ...

In the following Wheatstone bridge `P//Q = R//S`. If key `K` is closed, then the galvanometer will show deflection

A

In left side

B

In right side

C

No deflection

D

In either side

Text Solution

Verified by Experts

The correct Answer is:
D
(d) pressing the key does not disturb current in all resistances as the bridge is balanced. Therefore, deflection in the galvanometer in whatever direction it was, will stay.
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