Question

If the voltage of the potential barrier is V0. A voltage V is applied to the input, at what moment will the barrier disappear?

(a) V< V0

(b) V= V0

(c) V> V0

(d) V<< V0

The question was posed to me during an online exam.

My doubt stems from The P-N Junction as a Diode topic in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer 1

Correct choice is (b) V= V0

To explain I would say: When the voltage will be same that of the potential barrier, the potential barrier disappears resulting in flow of current.