Question

The Hall coefficient of a specimen is 3.66 x 10^-4 m^3C^-1. If it’s resistivity is 8.93 x 10^-3 Ωm, what will be its mobility?

(a) 0.01 m^2V^-1s^-1

(b) 0.02 m^2V^-1s^-1

(c) 0.03 m^2V^-1s^-1

(d) 0.04 m^2V^-1s^-1

Answer 1

The correct choice is (d) 0.04 m^2V^-1s^-1

Easy explanation: We know, Mobility = Hall coefficient/resistivity

Therefore, Mobility = 3.66 x 10^-4/8.93 x 10^-3

= 0.04 m^2V^-1s^-1.