Question

The electrical resistance of the depletion layer is large because

• A. It has no charge carriers
• B. It has a large number of charge carriers
• C. It contains electrons as charge carriers
• D. It has holes as charge carriers

Hint:

The depletion region has high resistance because it contains no free electrons or holes to conduct electricity.

Answer 1

The Correct Option is A

The depletion layer in a p-n junction is the region around the junction where mobile charge carriers (electrons and holes) have diffused across and recombined.
This leaves behind only immobile ions, which create an electric field but do not conduct current.
Since it lacks free charge carriers, the region behaves like an insulator, resulting in high electrical resistance.