1. a magnet that is created by passing an electric current through a coil of wire wrapped around an iron core

Examples

• The electromagnet in the crane lifted the heavy steel beams.
• When the power was turned off, the electromagnet released the metal objects.
• Scientists used an electromagnet to separate iron filings from the mixture.
• The doorbell contains a small electromagnet that moves the striker.
• The MRI machine uses powerful electromagnets to create detailed images.
• Students built a simple electromagnet using a battery, wire, and nail.