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Two batteries of emf 4 V and 8V with internal resistance 1 Ω and 2 Ω are connected in a circuit with a resistance of 9 Ω as shown in figure. The current and potential difference between the points P and Q are
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- 1/3 A and 3 V
- 1/6 A and 4 V
- 1/9 A and 9 V
- 1/12 A and 12 V
Correct Option: A
| I = | 8 - 4 | = | 4 | = | 1 | A |
| 1 + 2 + 9 | 12 | 3 |
| VP - VQ = 4 - | 1 | × 3 = 3 volt |
| 3 |
