Electromagnetism

4. Changes electrical energy into mechanical energy.
7. Use induction to increase or decrease the voltage of alternating current.
11. Using a magnetic field to create an electric current in a wire.
13. Wrapping a solenoid around an iron core.
14. Energy that results from the position or motion of charged particles.
15. An instrument containing a magnetized pointer that shows the direction of magnetic north and bearings from it.
17. A coil or loop of wire. A simple motor has one.

1. A device that reverses the direction of the current in the wire, causing the armature to complete its turn.
2. Use induction to change mechanical energy into electrical energy.
3. He was a physicist who discovered that there is a connection between electricity and magnetism.
5. A device that measures the strength and direction of an electric current in a wire.
6. Occurs when a wire moving near a magnet gains an electric current.
8. Results when electric currents and magnetic fields interact with each other.
9. A magnet that retains its magnetism after being removed from an external magnetic field.
10. The sum of an object’s kinetic energy and potential energy.
12. A coil of wire that carries an electric current, and therefore produces a magnetic field.
16. Electromagnets can lift this train off its tracks and move it forward.