Question Detail

PHY 102 Last Minute Prep Objective Question

Question

Which is true about depletion layer in p-n junction?
Options
A formed by diffusion of electrons from n-type to p-type and holes from p-type to n-type.
Correct Answer
B filled with charge carriers.
C its dimension is constant.
D formed by diffusion of electrons from p-type to n-type and holes from n-type to p-type.
Correct Answer

Option A is the correct answer.

Detailed Explanation

The layer forms when carriers diffuse across the junction and recombine, creating a region without free carriers

Hint

The region is named because it is 'depleted' of mobile charge carriers.

Question Info