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An electric motor converts electric energy into mechanical energy that can be used to do work. In the experiment we first use DC current to flow through the wire. Remember that DC current flows in only one direction unless there is a switch to reverse its direction.
Feed electricity (electrical energy) into it and you get motion (mechanical energy) back out. That's the essence of an ordinary motor that uses DC (direct current) electricity. If you're less than sure how a motor like this works, you might want to check out our introductory article about electric motors. Photo: The powerful electric motor from an old lawn mower.