Q. The electrical conductivity of an intrinsic semiconductor at 0 K is
A) Less than that of an insulator
B) Is equal to zero
C) Is equal to infinity
D) More than that of an insulator
Explanation
(b) The conductivity of an intrinsic semiconductor decreases with decrease in temperature and so it behaves as an insulator at 0 K. The conductivity of an insulator is zero. Therefore, the electrical conductivity of an intrinsic semiconductor at 0 K is equal to zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.