Electromagnet

In this module, students design electromagnets, which are a fundamental part of many electronic devices, like motors, loudspeakers, and hard drives. Students create an electromagnet with a simple coil of wire and a battery and explore whether an electromagnet’s strength changes with the number of turns in the magnet’s coil. Students also measure the magnet’s strength by counting the number of objects the electromagnet can lift. Finally, students design an electromagnetic crane to separate steel from junk.