Question

When $npn$ transistor is used as an amplifier, then

• A. electrons move from collector to base
• B. holes move from base to emitter
• C. electrons move from base to collector
• D. electrons move from emitter to base.

Answer 1

Answer: (C)

In $n-p-n$ transistor, the electrons are majority carriers in emitter, which move from base to collector while using $n-p-n$ transistor as an amplifier.