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Expression for the output voltage Vo in terms of the input voltage V1 and V2 in the circuit shown in the figure, assuming operational amplifier to be ideal is Vo = A1 V1 + A2 V2 Values of A1 and A2 would be respectively
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- 9 and – 10
- 9.9 and – 10
- – 9 and 10
- – 9.9 and 10
Correct Option: B
| VB = V1 - | × 11 = 0.9 V1 | |
| 110 |
VA = VB = 0.9 V1
| Again | = | |||
| 100 K | 10 K |
| ⇒ | = | |||
| 100 | 10 |
⇒ V0 = 9.9 V1 – 10 V2
∴ A1 = 9.9 and A2 = – 10
