Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Current Electricity

Question:

In a conductor, what happens to the mobility if the relaxation time increases ?

Options:

It rises.

It falls.

It remains the same.

Cannot be predicted.

Correct Answer:

It rises.

Explanation:

Mobility : μ = et/m

As the relaxation time rises, the collisions become less frequent and hence, the electron is at ease to mobility.