Question

Which of the following are true for a PNP transistor?

(a) the emitter current is less than the collector current

(b) the collector current is less than the emitter current

(c) the electrons are majority charge carriers

(d) the holes are the minority charge carriers

The question was posed to me at a job interview.

Origin of the question is The Junction Transistor in portion Transistor Characteristics of Electronic Devices & Circuits

Answer 1

The correct option is (b) the collector current is less than the emitter current

For explanation: The 2 – 5% of holes is lost in recombination with electrons in the base region. The majority charge carriers are holes for a PNP transistor. Thus the collector current is slightly less than the emitter current.