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An aluminum wire having a cross-sectional area equal to 4.20 10-6 m carries a current of 4.00 A. The density of aluminum is 2.70

An aluminum wire having a cross-sectional area equal to 4.20 10-6 m carries a current of 4.00 A. The density of aluminum is 2.70 g/cm. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire. mm/s

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