Question

Which of the following is an independent variable in a linear analysis of a common base transistor?

(a) Collector emitter voltage

(b) Collector current

(c) Emitter base voltage

(d) Emitter current

I had been asked this question in an interview for internship.

I want to ask this question from Transistor Amplifier Response, Taking Source Resistance into Account in chapter High Frequency Transistor of Electronic Devices & Circuits

Answer 1

The correct choice is (d) Emitter current

To explain I would say: In a linear analysis of a common base transistor, we have two independent variables. The emitter current is an independent variable and the emitter base voltage is the dependent variable. We can obtain VEB using IE from the characteristic curve.