Question

what do you mean by mobility of charge carrier
​

Answer 1

Answer:

Mobility of charge:- The mobility of a charge carrier is defined as the average velocity with which the free-electron move towards the positive end of a conductor under the influence of an external applied electric field.

It is denoted by

′

μ

′

and mathematically given as:-

μ=

E

v

d

___(i) (ratio of magnitude of drift velocity and electric field)

where, V

d

=−

m

eE

τ __(ii) [τ= Relaxation time]

from (i) and (ii) we have :-

μ=

m

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