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December 6, 2016

Homework Help: physics

Posted by Anonymous on Tuesday, February 9, 2010 at 5:24pm.

Two long straight wires are parallel and 9.0 cm apart. They are to carry equal currents such that the magnetic field at a point halfway between them has magnitude 320 ┬ÁT.
(a) Should the currents be in the same or opposite directions?

opposite

(b) How much current is needed?

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