When forward bias is applied to a p-n junction, then what happens to the potential barrier (VB) and the width (X) of the depletion region? (a) VB increase, X decreases (b) VB decreases, X increase (c) VB increase, X increase (d) VB decreases, X decreases

Answer: (d). Forward bias opposes the built-in field, so the barrier becomes VB - V, smaller. Majority carriers are pushed toward the junction, so the depletion width X also reduces. So the answer is (d) VB decreases, X decreases.

When forward bias is applied to a p-n junction, then what happens to… | MHT CET 2023 (12 May, Shift 1)

Q52MHT CET 2023 · 12 MAY · SHIFT 1Easy

P-N Junction Diode

When forward bias is applied to a p-n junction, then what happens to the potential barrier $(V_B)$ and the width $(X)$ of the depletion region?

Show answer and solution

Answer: (d)

Forward bias opposes the built-in field, so the barrier becomes $V_B - V$ , smaller.
Majority carriers are pushed toward the junction, so the depletion width $X$ also reduces.
So the answer is (d) $V_B$ decreases, $X$ decreases.

Report a mistake

P-N Junction Diode question from MHT CET 2023 (12 May, Shift 1)

More questions on P-N Junction Diode