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What are the components of an electromagnet and how do they get connected?

PICTURE IS JUST FOR FUN... PLZ HLP ;-;

What are the components of an electromagnet and how do they get connected? PICTURE-example-1
User Cristin
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well I'm sure many a time you've seen on some science experiment someone wrap a copper wire around a nail well thats generally the idea for electromagnets you get a solid piece of iron which is the only metal that is magnetic and you wrap a copper wire around it and the idea is to make two opposing magnetic poles by aligning the molecules with a electrical charge (a battery) so now with all three pieces assembles you have a copper wire attached to two sides of a battery and wrapped around a nail
User Bob Kaufman
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An electromagnet is a magnet that is created using an electric current -- created by electricity. Since electricity can be turned on and off, so can an electromagnet. It can even be weakened or strengthened by decreasing or increasing the current. Also when charges, like electrons or protons, are stationary, they produce electric forces. But when they're moving, they produce magnetic forces. 
User Roadmaster
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