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July 29, 2014

Homework Help: physics

Posted by pakilina on Friday, March 9, 2012 at 10:33am.

A graphite rod is 1.0 m long, with a 1.0 cm by 0.5 cm rectangular cross sectional area. What is the electrical resistance between its long ends? What must be the diameter of a circular 2.0 m long copper rod if its resistance is to be the same?

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