Question

In p-n junction, avalanche current flows in circuit when biasing is

• A. forward
• B. reverse
• C. zero
• D. excess

Answer 1

The correct option is B reverse

Avalanche breakdown is a phenomenon that can occur in both insulating and semiconductor materials, It is a form of electric current multiplication that can allow very large current within materials which are otherwise good insulators.

Here the current in reverse bias $p-n$ junction will increases suddenly after some particular voltage.

Therefore we can say that avalanche current flows in circuit when biasing is reverse

Therefore option $B$ is correct.