What is a Reversed Biased Diode?

Answer: Theoretically, diodes only permit current to flow in one direction, and the voltage they apply is known as “forwards bias.” If the voltage moves in the other direction, we refer to the orientation as having “reverse bias.” 

As a type of electronic check valve, reverse bias theoretically prevents current flow. Reverse bias occurs when the p-side of the diode is coupled to the battery’s negative voltage and the n-side is attached to its positive potential. This causes the depletion layer’s thickness to increase. As a result, a negligible amount of current can flow through the PN junction.