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• Topic:

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In the circuit shown $P\ne R$, the reading of the galvanometer is same with switch S open or closed. Then

(1) ${I}_{R}={I}_{G}$

(2) ${I}_{P}={I}_{G}$

(3) ${I}_{Q}={I}_{G}$

(4) ${I}_{Q}={I}_{R}$