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

Vedclass · Accepted Answer

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,

Similar Questions

The depletion layer in $p-n$ junction region is caused by

$A$ $2\,V$ battery forward biases a diode. There is a drop of $0.5\,V$ across the diode which is independent of current. Also,a current greater than $10\,mA$ produces large joule heat and damages the diode. If the diode is to be operated at $5\,mA$,the series resistance to be used is:

The barrier potential of a $p-n$ junction depends on:
$(1)$ Type of semiconductor material
$(2)$ Amount of doping
$(3)$ Temperature
Which one of the following is correct?

The depletion layer consists of .......

Which of the following statements is not correct when a junction diode is in forward bias?

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