-
For the op-amp circuit shown below the voltage gain Aν = ν0/νi is:
-
- – 8
- 8
- – 10
- 10
Correct Option: A
Apply KCL at node A
| + | + | = 0 ............(i) | ||||
| R | R | R |
KCL at node B
| + | + | = 0 ............(ii) | ||||
| R | R | R |
KCL at node C
| + | = 0 .............(iii) | |||
| R | R |
on putting VC = 0 (due to virtual ground) and eliminating VA and VB from equation (i), (ii) and (iii)
| = – 8 | ||
| Vi |
