Question

Electric conduction in a semiconductor is due to:

• A. holes only
• B. electrons only
• C. neither holes nor electrons
• D. both electrons and holes
• E. recombination of electrons and holes

Hint:

In semiconductors, both free electrons and holes contribute to electrical conduction.

Answer 1

The Correct Option is D

Step 1: In semiconductors, conduction occurs due to the movement of both electrons and holes. 
Step 2: Electrons are the charge carriers in the conduction band, and holes are the absence of electrons in the valence band. Both contribute to electric conduction. Thus, electric conduction in semiconductors is due to both electrons and holes.