Question

When the collector current is increased in a transistor_________

(a) the reverse current is increased

(b) the temperature is increased

(c) collisions of electrons decrease

(d) the emitter does not emit electrons

This question was posed to me in my homework.

This interesting question is from Thermal Runaway topic in chapter Transistor Biasing and Thermal Stabilization of Electronic Devices & Circuits

Answer 1

Right answer is (b) the temperature is increased

For explanation: As the collector current is increased, the emitter releases more number of electrons. This causes more collisions of electrons at collector. This happens in a cycle and produces such a condition in which temperature is further more increased.