Скачать или смотреть Electromagnetism | Forces at a distance | Middle school physics | Khan Academy

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Moving electric charges create magnetic fields in the space around them. We can use these magnetic fields to generate magnetic forces. Oppositely, when we change magnetic fields around charges we can create moving electric charges, or electricity. We call both of these phenomena electromagnetism. Incredibly useful, there are devices in everyday life that use electromagnets and electromagnetism.

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