Question

Consider following two statements

$\left(A\right)$ In forward biased condition, width of depletion region in p-n junction diode decreases.

$\left(B\right)$ Barrier potential of a p-n junction depends on amount of doping.

The correct statement(s) is/are

• A. Only $\left(A\right)$
• B. Only $\left(B\right)$
• C. Both $\left(A\right)$ and $\left(B\right)$
• D. Neither $\left(A\right)$ nor $\left(B\right)$

Answer 1

The correct option is C Both $\left(A\right)$ and $\left(B\right)$

Depletion width of a p-n junction diode depends on doping.

Forward bias voltage is opposite to the contact/barrier potential. Hence depletion width decreases and in reverse bias, potential barrier will increase because reverse bias voltage will be in same direction.