Question

The midband gain of an amplifier is 100 and the lower cutoff frequency is 1kHz. The gain of the amplifier at a frequency of 20Hz is approximately

• A. 2
• B. 20
• C. 50
• D. 100

Hint:

For amplifiers, the gain falls off at frequencies lower than the cutoff frequency, and it can be calculated using the amplifier's bandwidth characteristics.

Answer 1

The Correct Option is A

The gain of an amplifier decreases below the lower cutoff frequency. For a frequency of 20 Hz, the gain is reduced significantly, approximately by a factor of 50, resulting in a gain of 2.