Q. Identify the property which is not characteristic for a semiconductor?
A) At a very low temperature, it behaves like an insulator
B) At high temperature two types of charge carriers will cause conductivity
C) The charge carriers are electrons and holes in the valence band at higher temperatures
D) The semiconductor is electrically neutral
Explanation
(c) At the higher temperature only electrons cross the forbidden gap and reach in valance band, so statement (c) is wrong.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.