If an amplifier has a voltage gain of 100,000,it has a decibel voltage gain of ________.
A) 1 dB
B) 10 dB
C) 20 dB
D) 100 dB

Question

Quizplus · Accepted Answer

Decibel (dB) voltage gain is defined as 20 times the logarithm (base 10) of the voltage gain.

dB voltage gain = 20log (voltage gain)

Substituting the given voltage gain in the above equation,

dB voltage gain = 20log (100,000)

= 100 dB

Therefore, the correct answer is D) 100 dB.

If an Amplifier Has a Voltage Gain of 100,000,it Has