Question

What is the path of the output characteristic of a CB transistor physical model in the active region?

(a) Linear

(b) Exponential decrease

(c) Exponential increase

(d) Constant

I got this question in an interview.

My query is from Physical Model of a CB Transistor topic in division Small-Signal Low-Frequency AC models of Transistors of Electronic Devices & Circuits

Answer 1

Correct option is (d) Constant

The best I can explain: In a physical model of a common base transistor, the output characteristic curve first increases exponentially and then remains constant. In the active region of working the output characteristics show a constant value collector current with respect to collector base voltage.