The input resistance of the base of an emitter follower is usually
A)low.
B)shorted to ground.
C)high.
D)open.

Question

Quizplus · Accepted Answer

The input resistance of the base of an emitter follower is usually high because the input is applied to the base, and the base-emitter junction behaves like a forward-biased diode, which presents a high input resistance. Additionally, the emitter follower configuration provides a form of current amplification, which further increases the effective input resistance seen at the base.

The Input Resistance of the Base of an Emitter Follower