question_answer

                A forward biased diode is:

A)                  

B)                  

C)                  

D)                  

Correct Answer: D

Solution :

                Key Idea: For forward biasing of diode, p-side of diode should be at higher potential than n-side.                 The p-n junction diode can be shown as:                 If p-side of p-n junction diode is given more                                 positive potential than n-side, then it is forward biased.                 In option (d), p-side is at 0V and n-side at -2V, so \[p\] is at higher potential. Hence, it is forward biased.                 Note:    p-n junction diode is mainly used as a rectifier.