Q. In an n-type semiconductor, which of the following statements is true?
A) Electrons are majority carriers and trivalent atoms are dopants
B) Electrons are minority carriers and pentavalent atoms are dopants
C) Holes are minority carriers and pentavalent atoms are dopants
D) Holes are majority carriers and trivalent atoms are dopants
Explanation
[Solution from source] An n-type semiconductor is made by doping with pentavalent atoms (e.g. P, As), which donate electrons. Electrons become the majority carriers and holes the minority carriers. Trivalent dopants would give p-type material. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.