# PN-junction diode works as an insulator, if connected Option 1) To A.C.   Option 2)  In forward bias Option 3) In reverse bias Option 4) None of these

D Divya Saini

As we learnt in

P -N junction as diode -

It is a one way device. It offers a low resistance when forward biased and high resistance when reverse biased.

- wherein

R = 0, Forward

$\rightarrow \infty$ Reverse

P N Junction in reverse biased mode offer infinitely large resistance and hence no current flow through it. Hence P N Junction in reverse bias act as an insulator.

Option 1)

To A.C.

Incorrect

Option 2)

In forward bias

Incorrect

Option 3)

In reverse bias

Correct

Option 4)

None of these

Incorrect

Exams
Articles
Questions