A copper wire of radius a = 0.330 mm has an aluminum jacket of outer radius b = 0.476 mm. There is a current i = 1.50 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 x 1080-m and 2.75 x 1080-m. Calculate the current in (a) the copper and (b) the aluminum. (c) If a potential difference V = 18.0 V between the ends maintains the current, what is the length in meters of the composite wire? (a) Number (b) Number (c) Number Units Units Units
A copper wire of radius a = 0.330 mm has an aluminum jacket of outer radius b = 0.476 mm. There is a current i = 1.50 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 x 1080-m and 2.75 x 1080-m. Calculate the current in (a) the copper and (b) the aluminum. (c) If a potential difference V = 18.0 V between the ends maintains the current, what is the length in meters of the composite wire? (a) Number (b) Number (c) Number Units Units Units
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Transcribed Image Text:A copper wire of radius a = 0.330 mm has an aluminum jacket of outer radius b = 0.476 mm. There is a current i = 1.50 A in the
composite wire. Take the resistivity for copper and aluminum to be 1.69 x 1080-m and 2.75 x 1080-m. Calculate the current in (a) the
copper and (b) the aluminum. (c) If a potential difference V = 18.0 V between the ends maintains the current, what is the length in
meters of the composite wire?
(a) Number i
(b) Number
(c) Number i
Units
Units
Units
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