Answered: When a p-n junction is forward biased,…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 92AP: The Hall effect is to be used to find the sign of charge carries in a semiconductor sample. The...

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When a p-n junction is forward biased,

a) potential barrier decreases

b) potential barrier increases

c) majority-carrier current reduces to zero

d) minority-carrier current reduces to zero

Expert Solution

Step 1

There exists a barrier potential across a p-n junction. In forward biasing, the p-junction is connected to the positive terminal of the voltage source and the n-junction is connected to the negative terminal of the voltage source. The bias voltage will repel the majority current carriers of each p and n type material so that large number of holes and electrons starts appearing at the junction.

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