Which one of these amplifiers has high input resistance and low output resistance?
A)common-cause
B)common-current
C)common-collector
D)common-emitter

Question

Quizplus · Accepted Answer

Common-collector amplifier, also known as an emitter follower, has high input resistance and low output resistance. The input resistance depends on the resistance of the base-emitter junction, which is very high. The output resistance depends on the resistance of the emitter-collector junction, which is low. Therefore, C is the best choice.

Which One of These Amplifiers Has High Input Resistance and Low