The increase in the width of the depletion region in a p-n junction diode is due to :

1. forward bias only

2. reverse bias only

3. both forward bias and reverse bias

4. increase in forward current

Doubtly Asked 30 Oct 2026 NEET UG 2020 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 2. reverse bias only

In reverse bias, the applied voltage adds to the barrier. Majority carriers are pulled away from the junction, so the depletion region widens.

In forward bias the barrier is reduced and the depletion region narrows. So the increase is due to reverse bias only: option 2.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

Was this answer helpful?