First slide

P-N junction diode

Question

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

Easy

A

reverse bias only
B

both forward bias and reverse bias
C

increase in forward current
D

forward bias only

Solution

In reverse bias the no of unmoved ions increases across the junction. Hence the internally developed electric field which essentially opposes the external field, increases.

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