The number of holes in an intrinsic semiconductor

A.

is not equal to the number of free electrons

B.

is greater than the number of free electrons

C.

is equal to the number of free electrons

D.

is less than the number of free electrons

Correct answer is C

An intrinsic semiconductor, also called an undoped semiconductor, is a pure semiconductor. In intrinsic semiconductors the number of excited electrons and the number of holes are equal: n = p