If the average collision time of an electron increases by a factor of 2, the resistivity of the material will
A) remain the same.
B) increase by a factor of 2.
C) decrease by a factor of 2.
D) increase by a factor of 4.

Question

Quizplus · Accepted Answer

The resistivity of a material is inversely proportional to the average collision time of electrons. If the collision time increases by a factor of 2, the resistivity decreases by a factor of 2.

If the Average Collision Time of an Electron Increases by a Factor