A copper wire has a circular cross section with a radius of 1.75 mm. The equation for drift velocity is given below.
vd = I/nqA

(a) If the wire carries a current of 3.60 A, find the drift speed of the electrons in the wire. (n = 8.46 1028 electrons/m)

(b) All other things being equal, what happens to the drift speed in wires made of metal having a larger number of conduction electrons per atom than copper? Explain.


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