Question

An amplifier has a voltage gain of 100the voltage gain in dB is

• A. 20 dB
• B. 40 dB
• C. 30 dB
• D. 50 dB

Answer 1

Answer: (B)

40 dB

Answer 2

: Voltage gain in $dB = 20\log_{10}A_{v}$

}{= 20 \times 2 = 40dB}$$