Q.

An amplifier has a voltage gain, Av = 1000. The voltage gain in dB is

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a

20 dB

b

60 dB

c

3 dB

d

30 dB

answer is D.

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Detailed Solution

Voltage  gain, Av=1000In  dB,  voltage  gain,A=10 log10  1000  dB  =10×3log1010  dB      =30                    ∵log10  10=1
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