Question

In intrinsic semiconductor at room temperature, number of electrons and holes are

• A. equal
• B. zero
• C. unequal
• D. infinite

Answer 1

The correct option is A equal

An intrinsic semiconductor also called an undoped semiconductor or an i-type semiconductor is a pure semiconductor without any significant dopant species present. The number of charge carriers, therefore, is determined by the properties of the material itself instead of a number of impurities.

In intrinsic semiconductors, the number of excited electrons and the number of holes are equal.

Therefore option $A$ is correct.