question_answer

The voltage gain of the following amplifier is    [AIIMS 2005]

A)            10  

B)            100

C)            1000                                         

D)            9.9

Correct Answer: B

Solution :

                   Voltage gain\[A=\frac{{{V}_{o}}}{{{V}_{i}}}=\frac{{{R}_{f}}}{{{R}_{i}}}\]\[=\frac{100\,k\Omega }{1\,k\Omega }=100\].