Reverse bias applied to a junction diode (a) lowers the potential barrier (b) raises the potential barrier (c) increases the majority carrier current (d) increases the minority carrier current

Answer: (b). In reverse bias the applied voltage adds to the built-in potential: barrier becomes V₀ + V. Majority carrier flow is suppressed; the small minority current is nearly independent of voltage. So the answer is (b) raises the potential barrier.

Reverse bias applied to a junction diode | NEET 2003 (AIPMT)

Q117NEET 2003 · AIPMTEasy

P-N Junction Diode

Reverse bias applied to a junction diode

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Answer: (b)

In reverse bias the applied voltage adds to the built-in potential: barrier becomes $V_0 + V$ .
Majority carrier flow is suppressed; the small minority current is nearly independent of voltage.
So the answer is (b) raises the potential barrier.

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