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• Topic:

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The circuit shown here is used to compare the e.m.f. of two cells ${E}_{1}$ and ${E}_{2}\left({E}_{1}>{E}_{2}\right)$. The null point is at C when the galvanometer is connected to E1. When the galvanometer is connected to E2, the null point will be

(1) To the left of C

(2) To the right of C

(3) At C itself

(4) Nowhere on AB

PMT