Question

The collector current (IC) that is obtained in a self biased transistor is_________

(a) (VTH – VBE)/RE

(b) (VTH + VBE)/RE

(c) (VTH – VBE)/RE

(d) (VTH + VBE)/RE

This question was addressed to me by my college director while I was bunking the class.

This intriguing question originated from Self-Bias topic in portion Transistor Biasing and Thermal Stabilization of Electronic Devices & Circuits

Answer 1

Correct option is (a) (VTH – VBE)/RE

The best I can explain: The collector current is analysed by the DC analysis of a transistor. It involves the DC equivalent circuit of a transistor. The base current is first found and the collector current is obtained from the relation, IC=IBβ.