Question

For the given circuit of p-n junction diode which is correct?

(a) in forward bias the voltage across R is V 

(b) in reverse bias the voltage across R is V 

(c) in forward bias the voltage across R is 2V 

(d) in reverse bias the voltage across R is 2V.

Answer 1

The correct option is (a) in forward bias the voltage across R is V.

Explanation:

In forward biasing, the resistance of p-n junction diode is very low to the flow of current. So practically all the voltage will be dropped across the resistance R, i.e. voltage across R will be V. In reverse biasing, the resistance of p-n junction diode is very high. So the voltage drop across R is zero.