Current Electricity and Electrical InstrumentHard

Question

In the circuit shown the cells A and B have negligible resistances. For VA = 12V, R1 = 500 Ω and R =100 Ω the galvanometer (G) shows no deflection. The value of VB is
                

Options

A.6 V
B.4 V
C.2 V
D.12 V

Solution


P.D. across, R = 100 Ω = 100 × = 2 volt

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