A) 10
B) 100
C) 1000
D) 9.9
Correct Answer: B
Solution :
Voltage gain of the given operational amplifier is defined as ratio of output voltage to input voltage. \[{{A}_{V}}=\frac{{{V}_{o}}}{{{V}_{i}}}\] From Ohm?s law \[\operatorname{V} = iR\], where i is current, R is resistance. \[\therefore \,\,\,\,\,{{A}_{V}}=\frac{{{R}_{f}}}{{{R}_{i}}}=\frac{100\,k\Omega }{1\,k\Omega }\,=\,100\]
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