A 4.80-m length of 2.0-mm-diameter wire carries a 750-mA

Chapter 18, Problem 56

(choose chapter or problem)

A 4.80-m length of 2.0-mm-diameter wire carries a 750-mA dc current when 22.0 mV is applied to its ends. If the drift velocity is determine (a) the resistance R of the wire, (b) the resistivity and (c) the number n of free electrons per unit volume.

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