A 1-meter-long wire consists of an inner copper core with a radius of 1.0 mm and an outer aluminum sheathe, which is 1.0 mm thick, so the total radius of the wire is 2.0 mm. The resistivity of copper is 1.7×10−8 Ω·m and that of aluminum is 2.8×10−8 Ω·m. What is the total resistance of the wire? (Hint, are the two different materials in series or in parallel with each other?)
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A 1-meter-long wire consists of an inner copper core with a radius of 1.0 mm and an outer aluminum s...
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