In forward bias, the width of potential barrier in a P-N junction diode

  • Option 1)

    Increases 

  • Option 2)

    Decreases

  • Option 3)

    Remains constant

  • Option 4)

    First increases then decreases

 

Answers (1)

 

P -N junction as diode -

It is a one way device. It offers a low resistance when forward biased and high resistance when reverse biased.

- wherein

R = 0, Forward 

\rightarrow \infty Reverse

 

In forward bias, The width of potential barrier decreases and hence flow of current becomes high


Option 1)

Increases 

Option is incorrect

Option 2)

Decreases

Option is correct

Option 3)

Remains constant

Option is incorrect

Option 4)

First increases then decreases

Option is incorrect

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