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50. In the circuit shown the cells A and B have negligible resistance. For Va =12V, R1=500ohm and R=100ohm the galvanometer G shows no deflection. The value of Vb is |
| Answer» 50. In the circuit shown the cells A and B have negligible resistance. For Va =12V, R1=500ohm and R=100ohm the galvanometer G shows no deflection. The value of Vb is | |