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April 21, 2014

Homework Help: physics

Posted by hassan on Thursday, June 16, 2011 at 4:24am.

A length of wire carrying a current i and bent into a circular coil of one turn.The same length of wire has been out to give a coil of 5 turns, each of 1\5 the original radius.If Ba and Bb are the magnitudes of the magnetic fields at the centers of the two coils, what is the ratio Bb\Ba?

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