| A | B |
|---|
| magnetism | the properties and interactions of magnets |
| magnetic field | the area around a magnet where the magnetic force can act |
| magnetic pole | the region of the magnet where the force is strongest |
| magnetic domain | groups of atoms aligned with their magnetic poles in the same direction |
| electromagnet | temporary magnet made by wrapping a wire coil carrying a current around an iron core |
| solenoid | a single wire wrapped into a cylindrical wire coil, commonly found in the start of a car |
| galvanometer | a device that uses an electromagnet to measure electric current. |
| electric motor | a device that converts electrical energy into mechanical energy |
| electromagnetic induction | creation of a current by being near a magnetic field that is constantly changing |
| generator | a device that changes chemical or mechanical energy to electricity |
| turbine | a large wheel that rotates when pushed by water, wind, or steam |
| direct current | electric current that only flows in one direction through a wire |
| alternating current | electric current that reverses the direction of current through a wire in a regular pattern |
| transformer | a device that increases or decreases the voltage of an alternating current |
