In the circuit shown the cells A and B have negligible resistances. For V_A=12  V, R_1=500 Ω and ...

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In the circuit shown the cells A and B have negligible resistances. For V_A=12  V, R_1=500 Ω and R=100 Ω the galvanometer (G) shows no deflection. The value of V_B is
(a) 4  V
(b) 2  V
(c) 12  V
(d) 6  V

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Sir ynh p toh R wle resistance m current zero bcz potential same uske dono terminal p

SakshiSundriyal-usjy
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sir isme second wale resistance ki value aur Vb ki value equal ho gyi toh galvanometer deflection kyu show nhi krega ???

AyushRaj-wpdr