To make a PN junction conducting, | vedclass

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Question

(A) $PN$ junction diode acts as a conductor when it is forward-biased.In forward bias,the positive terminal of the battery is connected to the $P$-reg

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The value of forward bias should be more than the barrier potential.

Vedclass · Answer

(A) $PN$ junction diode acts as a conductor when it is forward-biased.In forward bias,the positive terminal of the battery is connected to the $P$-region and the negative terminal to the $N$-region.This reduces the width of the depletion layer and the height of the potential barrier.For significant current to flow,the applied forward bias voltage must exceed the barrier potential (which is approximately $0.7 \ V$ for Silicon and $0.3 \ V$ for Germanium).Therefore,the correct condition is that the forward bias should be greater than the barrier potential.

To make a $PN$ junction conducting,

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