Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: guest39538 on 08/08/2015 09:57:46
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if we pass a magnet through a copper coil in a vacuum, do we fail to make a net charge?
(no medium,no conduit)
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The copper coil conducts the electricity. No medium is required for magnetic fields to propagate and interact.
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I would expect electrons, under the influence of the moving magnetic field, to drift towards one end of the copper coil, leaving one end of the coil with a -ve charge, and the other end with a +ve charge. ie charge separation does occur in the copper wire.
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Electric current can also flow through a vacuum if electrons move from one point to another. This is the principle of the vacuum tube.