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Electricity and magnetism are the two facets of the electromagnetism force.

It means that where ever there is electricity flowing in a conductor there is

also a magnetic field produced. The intensity of the electric current flowing in

a wire determine the intensity of the magnetic field that arise near the wire.

So here's one easy way to make an electromagnet. You take a big iron nail

(the iron here act like a concentrator of the magnetic field). Then you make

as many turn you can with some insulated copper wire around the nail (you

can find very nice wire in the windings of an old transformer). You plug both

ends of the wire to a D size battery after removing the insulation at the ends

of the wire. When connected, try your new electromagnet on small iron nails.

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15y ago

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