Electronic Devices Question 44

Question: Let $ n _{P} $ and $ n _{e} $ be the number of holes and conduction electrons respectively in a semiconductor. Then

[MP PET 1995]

Options:

A) $ n _{P}>n _{e} $ in an intrinsic semiconductor

B) $ n _{P}=n _{e} $ in an extrinsic semiconductor

C) $ n _{P}=n _{e} $ in an intrinsic semiconductor

D) $ n _{e}>n _{P} $ in an intrinsic semiconductor

Show Answer

Answer:

Correct Answer: C

Solution:

In intrinsic semiconductors, the creation or liberation of one free electron by the thermal energy has created one hole.

Thus in intrinsic semiconductors ne = nh



NCERT Chapter Video Solution

Dual Pane