question_answer

In the following, which one of the diodes is reverse biased?                             [AIEEE 2006]

A)

B)

C)

D)

Correct Answer: D

Solution :

[d] A diode, in which its p side is connected to the positive terminal of voltage source andside is connected to negative terminal of voltage source is said to forward biased and the cases reverse to it are known as the cases of reverse bias.

For reverse biasing of an ideal diode, the potential ofside should be higher than potential of p side. Only option [d] is satisfying the criterion for reverse biasing.