| A | B |
| law of electric charges | like charges repel & opposites attract |
| static electricity | build-up of electric charges |
| conductor | a material in which charges can move easily |
| insulator | a material in which charges cannot easily move |
| battery | converts chemical energy into electrical |
| current | a continuous flow of electrons |
| resistance | opposition to the flow of electric charge |
| circuit | a complete, closed path through which electric charges flow |
| load | device that uses electrical energy to do work |
| series circuit | a circuit in which all parts are connected in a single loop |
| parallel circuit | a circuit in which different loads are located on separate branches |
| direct current | charges flow in the same direction |
| alternating current | charges flow in both directions |