Homework Help: physics

Posted by Rachel on Sunday, March 27, 2011 at 12:29pm.

A copper wire has a circular cross section with a radius of 3.75 mm.
If the wire carries a current of 4.00 A, find the drift speed of the electrons in the wire. (Assume the density of charge carriers (electrons) in a copper wire is n = 8.46 *10^28 electrons/m^3.)

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