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wireless charging at 120 kw

The principle of electromagnetic induction is that a current flowing through a conductor will generate a magnetic field, and conversely, moving a conductor in a magnetic field will generate a current. In the case of a continuous stable magnetic field, the conductor has to be physically moved to create a current in it. A single piece of wire moving through a magnetic field will produce only a small current. Where a wire is wrapped into a coil of wire, with many thousands of turns, that small current is repeated in each part of the coil, and so combined, becomes a substantial amount of electrical power. That is how a simple dynamo works, where a coil of wire is moved in a strong magnetic field to create a current.

More cleantechnica.com/2018/11/06/wireless-charging-at-120kw-by-electromagnetic-induction/

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