Question:
Temperature dependence of resistivity ρ(T) of semiconductors, insulators, and metals is significantly based on the following factors:
(a) number of charge carriers can change with temperature T
(b) time interval between two successive collisions can depend on T
(c) length of material can be a function of T
(d) mass of carriers is a function of T
Solution:
The correct answer is
(a) number of charge carriers can change with temperature T
(b) time interval between two successive collisions can depend on T