if the lenth of a wire conductor is doubled,by stretching it keeping the potential diffrence across it constant,by what factor does the drift speed of electron change ?

Question

anonymous · Answer

@apoorvk @ash2326 please figure it out.

apoorvk · Answer

Assuming that the diameter remains the same or suffers a negligible change?

anonymous · Answer

should the answer be "reduced by half" ?

ash2326 · Answer

Drift velocity is inversely proportional to the length for constant value of V potential difference. Thus, if the length of the conductor is doubled drift velocity will be halved.
The resistance of conductor is directly proportional to the length of the conductor. Thus, if length is doubled resistance will also be doubled.

ash2326 · Answer

source: http://www.iitphysics.org/current_conceptual.htm

anonymous · Answer

thanks @ash2326