An amplifier has a voltage gain of 100. The voltage gain in dB is
An amplifier has a voltage gain of 100. The voltage gain in dB is
A. 20 dB
B. 40 dB
C. 30 dB
D. 50 dB
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Correct Answer - B
Voltage gain in dB = 20 `log_(10) A_V=20 log_(10)100`
=20 x 2 =40 dB
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