A magnetic field = an electric field (kinda.) Play around with moving electrons and stationary protons in a wire, get a proton made apple, and then move that apple.What do you think will happen? The proton made apple will be pushed away by a force, that force’s strength is proportional to the apple’s speed and direction? What is that force? Magnetism.
When you get copper and magnet close to each other, the magnet moves electrons in the copper, since the magnetic field rotates, and magnetism basically=electricity,the electricity makes another magnetic field. This new field basically hates the magnet which makes an opposing force to it. Check out the [Lenz law.](http://(https://en.wikipedia.org/wiki/Lenz%27s_law))
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