Q. $p$-type semiconductor are
A) Positively charged
B) Produced when boron is added as an impurity
C) Produced when phosphorus is added as an impurity to silicon
D) Produced when carbon is added as an impurity to germanium.
Explanation
(b) Boron has valency three. When boron is doped in a pure semiconductor, then $p$-type semiconductor is formed.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.