Q. 25.0( 1 Vote )

2 In Fig. 14.1, Vo is the potential barrier across a p-n junction, when no battery is connected across the junction



A. 1 and 3 both correspond to forward bias of junction

B. 3 corresponds to forward bias of junction and 1 corresponds to reverse bias of junction

C. 1 corresponds to forward bias and 3 corresponds to reverse bias of junction.

D. 3 and 1 both correspond to reverse bias of junction.

Answer :

When a voltage is applied across a p-n junction diode, the potential barrier opposes the applied voltage and the effective voltage is lowered as in the case of 3. However, when the voltage is applied in reverse bias the potential barriers contributes to the voltage applied and hence the effective voltage is more than the potential barrier as in case 1.

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