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In the circuit shown the cells A and B h...

In the circuit shown the cells A and B have negligible resistances. For Va=12 V, Ry = 500 12 and R = 10022 the galvanometer (G) shows no deflection. The value of VR is V R - VB (a) 4 V (b) 2 V (c) 12 V (d) 6 V

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