Why does copper wire generateoscillating magetic field wbe ac current is passeed through it?
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This current flows because something is producing an electric field that forces the charges around the wire. ... A changing magnetic field through a coil of wire therefore must induce an emf in the coil which in turn causes current to flow.
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A magnetic field pulls and pushes electrons in certain objects closer to them, making them move. Metals like copper have electrons that are easily moved from their orbits. If you move a magnet quickly through a coil of copper wire, the electrons will move - this produces electricity.
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