Homework Help: Physics

Posted by Morgan on Tuesday, January 31, 2012 at 2:17pm.

High-voltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 10-8 m) wire used for some of these lines has a cross-sectional area of 4.4 x 10-4 m2. What is the resistance of 12 kilometers of this wire?

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