Question

The minority carriers of an NPN transistor are:
1. Donor ions
2. Free electrons
3. Holes
4. Acceptor ions

Answer 1

Correct Answer - Option 3 : Holes

CONCEPT:

• The material which is not a good conductor or a good insulator is called as a semiconductor.
• For example: Silicon
• The charge carriers which are present in more quantity in a semiconductor compared to other particles are called the majority charge carrier.

There are two types of semiconductors:

P-type semiconductor:

• The semiconductor having holes as majority charge carriers and electrons as a minority charge carrier is called as P-type semiconductor.

N-type semiconductor:

• The semiconductor having electrons as majority charge carriers and holes as a minority charge carrier are called as N-type semiconductor.

EXPLANATION:

In an NPN transistor, holes are the minority carriers and free electrons are the majority carriers.