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  • How to Make a Simple Motor

    Actually the wire is made of copper just coated with an insulating material (or dielectric) typically polyimide I think (just a polymer/plastic). The current passes through the copper wire, but if you fold it on itself so that it's touching it doesn't short circuit (current passage through the touching junction instead of around all the loops of the wire.) Insulated wires are useful in making solenoids too where short circuits are really bad.

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