When p-n junction diode is forward biased ………

Options

A. the depletion region is reduced and barrier height is increased.
B. the deplection region is widened and barrier height is reduced.
C. both the depletion region and barrier height reduced.
D. both the depletion region and barrier height increased.

Answer

C

Explanation

both the depletion region and barrier height reduced.
As the electric field of the external battery and the electric field in the depletioin layer are opposite, so the width of the depletion layer decreases and the height of depletion barrier also decreases.