An electric motor is a device that can transform electrical energy into movement. It uses the forces of atracction and repulsion between a magnet and an electricallycharged wire.
A relay is an electromagnetic component that works as a switch. When electricity passes through the coil, it acts like a magent. The coil attracts a moveable metal contact towards another fixed contact. When yhe electricity shops flowing, the moveable contact goes back to its original position.
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