| A | B |
| electric discharge | the rapid movement of extra electrons away from a charged object |
| static electricity | an electric charge that collects on the surface of an object |
| electric current | continuous movement of electrons |
| conductor | material through which electrons move easily |
| insulator | material in which electrons do not move easily |
| filament | thin wire in a bulb in which electrical energy is changed to heat and light |
| electric circuit | a path through which electrons can move |
| electromagnet | magnet produced by an electric current in a coil of wire, wrapped around an iron core |
| generator | a device that produces electrical energy from mechanical energy |