In the circuit shown above, an input of 1 V is fed into the inverting input of an ideal Op-amp A. The output signal \[{{\text{V}}_{\text{out}}}\] will be
A) + 10 V
B) -10 V
C) 0 V
D) infinity
Correct Answer: B
Solution :
Voltage gain, \[\frac{{{V}_{0}}}{{{V}_{i}}}=-\frac{{{R}_{f}}}{{{R}_{i}}}=-\frac{10}{1}=-10\] or \[{{V}_{0}}=-10{{V}_{i}}=-10\times 1=-10volt\]
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