Ncert Exercises & Solutions

In figure given below V₀ is the potential barrier across a p-n junction, when no battery is connected across the junction.

1.	1 and 3 both correspond to forward bias of junction.
2.	3 corresponds to forward bias of junction and 1 corresponds to reverse bias of junction.
3.	1 corresponds to forward bias and 3 corresponds to reverse bias of junction.
4.	3 and 1 both correspond to reverse bias of junction.

(2) Hint: The potential barrier depends on the biasing of the junction.

When a p-n junction is forward biased, it opposes the potential barrier junction, when the p-n junction is reverse biased, it supports the potential barrier junction, resulting in an increase in potential barrier across the junction.

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