Mumbai university > FE > SEM 1 > Applied Physics 1

Marks: 3M

Year: Dec 2013

Drift current:-

The electric current or movement of charge carriers due to an applied electric field resulting in a continuous flow of charge is called Drift Current.

Diffusion Current:-

Diffusion current can be defined as an electric current caused by the diffusion of charge carriers.

Mobility of charge carriers:-

The mobility of charge carriers is defined as the magnitude of the drift velocity acquired by thecharge carrier in a unit electric field. It is given by,

$µ =\frac{V_d}{E}$

where,$V_d$ is the drift velocity.