With forward bias to a PN junction the width of the depletion layer________

With forward bias to a PN junction the width of the depletion layer________

Right Answer is:

Decreases

SOLUTION

With forward bias to a PN junction the width of the depletion layer decreases.

Detailed Explanation

⇒ Whenever a PN junction is forward biased, the holes are repelled by the positive terminal of the voltage source.

⇒ As carriers (holes and electrons) get energy from the external voltage source, some of the holes and electrons are able to enter into the depletion layer and recombination takes place.

⇒ Consequently, the width of the depletion layer decreases as well as the potential barriers (VB at the depletion region is decreased).

⇒  Therefore, more majority carriers diffuse across the junction and a large amount of current will flow through the PN junction. An ideal PN junction has a voltage drop across the crystal.

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