Question

When the p-n junction diode is reverse biased, the thickness of the depletion layer

• A. increases
• B. decreases
• C. becomes zero
• D. remain constant

Answer 1

Answer: (A)

increases

The width of the depletion layer in a p-n junction diode increases in reverse bias as charge carriers are swept into battery terminals, holes from p-type into negative terminal and electrons from n-type into positive terminal.