Two long straight wires are parallel and 8.0 cm apart. They are to carry equal currents
Chapter 29, Problem 9(choose chapter or problem)
Two long straight wires are parallel and 8.0 cm apart. They are to carry equal currents such that the magnetic field at a point halfway between them has magnitude 300 mT. (a) Should the currents be in the same or opposite directions? (b) How much current is needed?
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