In forward bias the width of depletion layer decreases with increase in potential

Question

In forward bias the width of depletion layer decreases with increase in potential (A) barrier voltage (B) increases with increase in potential barrier voltage (C) is independent of potential barrier voltage (D) none of the above

Tardigrade Admin · Accepted Answer

In forward biasing, the forward bias voltage opposes the potential barrier

V_{B}

.
Due to it, the potential barrier is considerably reduced, the depletion region becomes thin, the potential barrier is much reduced and at some forward voltage (

0.1

to

0.3 V

), it is eliminated altogether.
Since, the small increase in forward voltage shows the large increase in forward current, hence the resistance of

p - n

junction is low to the flow of current when forward biased.

Q. In forward bias the width of depletion layer decreases with increase in potential

barrier voltage

increases with increase in potential barrier voltage

is independent of potential barrier voltage

none of the above