An electromagnet is a conductor which has a wire wrapped around it and
becomes a powerful magnet when electricity is passed through the wire.
If the electricity moves in one direction, the magnetic field becomes southernly polarized, and if the electricity moves in the opposite direction, the magnetic field becomes northernly polarized. If two electromagnets have electricity moving in the same direction, then they will both create the same direction of magnetic field, causing them to repel each other. If the two magnets have their electricity moving in opposite directions, one will become north and one will become south, causing them to attract each other. The more electricity that passes through the conductor, the stronger the magnetic field, and the less electricity, the weaker the magnetic field. |
How Electromagnets Work
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