Right Answer is:
10V
SOLUTION
Since the above circuit is an Inverting amplifier op-amp circuit, so the voltage gain will be:
Vo/Vi = -RF/R1
- Vo is the output voltage of the op-amp.
- Vi is the input voltage to the op-amp.
- RF is the feedback resistor connected between the output and the inverting input of the op-amp.
- R1 is the input resistor connected between the input voltage source and the inverting input of the op-amp.
Vo/3= -20/-5
Vo/3= 12
- The calculated ideal output voltage (12V) exceeds the positive saturation voltage (+10V) of the op-amp. This is an important point.
- Due to saturation, the op-amp cannot output a voltage beyond its saturation limits. In this case, even though the ideal output would be 12V, the actual output will be clamped to the positive saturation voltage (+10V).