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In the circuit shown the cells A and B have negligible resistances. For VA = 12V, R1 = 500Ω and R = 100Ω the galvanometer (G) shows no deflection. The value of VB is :
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- 4 V
- 2 V
- 12 V
- 6 V
Correct Option: B
Since deflection in galvanometer is zero so current will flow as shown in the above diagram.
| Current I = | VA | = | 12 | = | 12 | |
| R1 + R | 500 + 100 | 600 |
| So VB = IR = | 12 | x 100 = 2V |
| 600 |
