An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is________?

Academy of PakistanTest & Learning

804Active Users

Academy of PakistanTest & Learning

804Active Users

1860Electrical EngineeringMedium

A1/11KΩ

B5KΩ

C11KΩ

D1/5KΩ

Correct answer

A. 1/11KΩ

Explanation

The correct answer is 1/11KΩ.

An amplifier without feedback has a voltage gain of 50,input resistance os 1 KΩ & Output resistance of 2.5KΩ.The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is________? - Answer and Explanation | Academy of Pakistan