Question

The mobility of a charge carrier is the drift velocity acquired by it in a unit cross-sectional area.

(a) True

(b) False

This question was posed to me by my school principal while I was bunking the class.

This question is from Current Electricity in division Current Electricity of Physics – Class 12

Answer 1

Correct choice is (b) False

The best explanation: The mobility of a charge carrier is the drift velocity acquired by it in a unit electric field.

Mobility=\(\frac {Drift \, velocity}{Electric \, field}\). SI unit = \(\frac {ms^{-1}}{Vm^{-1}}\) = m^2V^-1s^-1.