If the p-n junction diode is forward biased, then width of potential barrier of diode

Increases

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Remains constant

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Decreases

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First increases and then remains constant

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Solution

The correct option is C Decreases
When, a voltage applied to the terminals of diode, the width of depletion region slowly starts decreasing. The reason for this is that in forward bias the direction of applied voltage always be opposite to that of barrier potential. Hence, width of potential barrier decrease.

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p - n

W

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In a forward biased p – n junction diode, the potential barrier in the depletion region is of the form

(A)

(B)

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