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Find the relation between electric current and drift velocity.

q = n a l e 

where n is number density(N / V)...........a is area...............l is length...& V = a l  ........e is elementry charge

time = dist  / speed  . .................. so t = l / vd

I = q / t 

I = n a e vd

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Electrical Conduction
Relation between Drift velocity and Electric Current
The electric current in a metallic conductor is produced due to drift of electrons opposite to the direction of electric field. The relation between current (i) and drift velocity

 

where n = number of free electrons per cubic metre.

A = cross-sectional area of conductor.

 

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Hi,
@ Luvleen, Right derivation. Keep writing! Your answers are appreciated by the users of this community. Thumbs up from the users!
@Rabindra, Refer to the answer given by your friend Luvleen. She has given the right relation between current and drift velocity.

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thank u mam

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