Question

the drift velocity of electrons in a current carrying conductor and electric field applied on the conductor are related as


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Answer 1

Explanation:

DRIFT VELOCITY :- When electric field is applied across a conductor each electron experience a force

F

=q

E

in the direction oppsite to field

E

. Due to this force they start drifting in the direction of force. The velocity of this drift is called drift velocity "V

d

".

Relationship between current density (J) and (Vd) drift velocity :-

If suppose for a conductor,

n = No of electrons per unit volume of the conductor

A = Area of C/S

V = Potential difference across the conductor

E = electric field Inside the conductor

i = Current, J = Current dencity,

ρ= specific resistance

then, the relation between current (I) and drift velocity in given as

I=neAVd