Physics 2012 JAMB Past Questions - Question 49: If a reverse biased voltage is applied across a p-n junction ,the depletion layer width is

Correct Answer

A

Explanation

The repulsion of both carriers of charges widens the charge depletion.The depletion layer width in a reverse-biased p-n junction depends on various factors such as the magnitude of the applied voltage, the doping concentrations of the p and n regions, and the material properties of the semiconductor. Generally, when a reverse bias voltage is applied, the depletion layer width increases. This is because the electric field created by the applied voltage repels the majority carriers (electrons in the p-region and holes in the n-region) away from the junction, widening the depletion region. However, the exact width of the depletion layer cannot be determined without specific values for these parameters.