A 22-kV power line that is 10.0 km long supplies the electric energy to a small town

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A 22-kV power line that is 10.0 km long supplies the electric energy to a small town at an average rate of 6.0 MW.
(a) If a pair of aluminum cables of diameter 9.2 cm are used, what is the average power dissipated in the transmission line?
(b) Why is aluminum used rather than a better conductor such as copper or silver?
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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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