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How are Electromagnetic forces created by a current?
How are Electromagnetic forces created?
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The current produces a magnetic field [itex]\vec B[/itex]. If there is a net nonzero electric charge, then it produces an electric field [itex]\vec E[/itex] also. These fields produce magnetic and electric forces on nearby charges: [itex]\vec F = q (\vec E + \vec v \times \vec B)[/itex].
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