PHYSICS
JAMB 2012 - Question 49
Physics 2012 JAMB Past Questions - Question 49: If a reverse biased voltage is applied across a p-n junction ,the depletion layer width is
Choose the correct answers from the options given.
A:
B:
C:
D:
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.
Frequently Asked Questions
Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.
You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.
Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.
Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.
Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.