Magnets

3. Temporary magnet made by wrapping a wire coil carrying a current, around an iron core.
9. A wire wrapped into a cylindrical coil.
10. Device that converts electrical energy to mechanical energy by using the magnetic forces between an electromagnet and a permanent magnet to make a shaft rotate.
11. current that reverses its direction of flow in a regular pattern.
14. The properties and interactions of magnets.

1. Process in which electric current is produced in a wire loop by a changing magnetic field.
2. Region on a magnet where the magnetic force exerted by a magnet is strongest; like poles repel and opposite poles attract.
4. A device that uses an electromagnet to measure electric current.
5. Group of atoms in a magnetic material with the magnetic poles of the atoms pointing in the same direction.
6. Surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials.
7. Electric current that flows in only one direction.
8. Device that uses electromagnetic induction to increase or decrease the voltage of an alternating current.
12. Device that use electromagnetic induction to convert mechanical energy to electrical energy.
13. Large wheel that rotates when pushed by stream, wind, or water and provides mechanical energy to a generator.