Question

What is conductivity & mobility? Derive an expression for conductivity in terms of mobility.

Answer 1

Mobility and conductivity. when an electric field E is applied across a piece of material, the electrons respond by moving with an average velocity called the drift. velocity . Then the electron mobility u,is defined as 1 . Ud = uE Ud is the drift velocity (m/s) E is the magnitude of the applied electric field,(v/m) u is the mobility (m²/(v.s)()