Wednesday
November 26, 2014

Homework Help: Physics

Posted by Selma on Saturday, March 13, 2010 at 11:19pm.

A water pipe is made of iron with an outside diameter of 2.5 cm and inside diameter of 2.0 cm. The pipe is used to ground an electric appliance. If a current of 20 A flows from the appliance into the water pipe, what fraction of this current will flow in the iron? What fraction in the water? Assume that water has a resistivity of 0.010 Ω∙ m.

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