ELECTROMAGNET BADGE
An electromagnet is made with an iron nail or an iron object. Some copper wire to make the coils around the iron nail/object, a battery or some electric source, you need steel paperclips/objects also you need red and black cables.
The differences between an electromagnet and a permanent magnet are. in an electromagnet the magnetic fields is created through electric current in a wire-wound coil and strengthened by a soft-iron core. As soon as you turn off the power, the soft-iron core loses its magnetism. The difference with a permanent magnet is a permanent magnet is made of ferromagnetic material, which is magnetised by a strong external magnetic field. The magnetically hard material that is used keeps part of its magnetisation after the external magnetic field is turned off.
An electromagnet is useful for the job when you are in a scrap yard and when it doesn’t automatically attract metal. it only works when you switch on the electricity. The magnet starts to work and then it will attract meta but when you turn off the electricity it repels all metals.
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