Question

What is the value of overall current gain in the CE short circuit current frequency response model while considering RS?

(a) AI × IB / IS

(b) AI × IC / IS

(c) AI × IS / IC

(d) AI × IS / IB

I had been asked this question in quiz.

I'm obligated to ask this question of The CE Short Circuit Current Frequency Response in portion High Frequency Transistor of Electronic Devices & Circuits

Answer 1

Right choice is (a) AI × IB / IS

To explain I would say: The current gain in a simplified common emitter hybrid model while considering RS is calculated as the product of current gain without external parameters and the ratio of base current and external applied current. It is expressed as AI × IB / IS. Where, IS is the external applied current on the amplifier.