1. Forward Bias:
(i) Within the junction diode the direction of applied voltage is opposite to that of built-in potential.
(ii) The current is due to diffusion of majority charge carriers through the junction and is of the order of milliamperes.
(iii) The diode offers very small resistance in the forward bias.
2. Reverse Bias:
(i) The direction of applied voltage and barrier potential is same.
(ii) The current is due to leakage of minority charge carriers through the junction and is very small of the order of μ A.
(iii) The diode offers very large resistance in reverse bias.
