| A | B |
|---|
| static electricity | accumulation of excess electric charge |
| law of conservation of charge | charge can be transferred, but not created or destroyed |
| electric field | surrounds every electric charge and exerts force to attract or repel |
| conductor | material through which electrons move easily |
| insulator | material through which electrons NOT move easily |
| charging by contact | transfer charge by touching or rubbing |
| charging by induction | rearrangement of electrons on neutral object from nearby charged object |
| electroscope | devise that detects electricty |
| gravity | attractive force between 2 objects that depends on mass & distance |
| SI | International System of Units based on metric system |
| electric current | net movement of electric charge in single direction |
| voltage difference | related to force that causes electricity to flow |
| electric circuit | closed path that electricity follows |
| resistance | tendency for material to resist flow of electrons and convert to to other forms of energy (thermal) |
| Ohm's law | current in a circuit equals voltage difference divided by resistance |
| power | rate at which energy is converted from one form to another |
| series circuit | electric circuit with only one branch |
| parallel circuit | contains two or more branches |
| electrical power | rate at which electrical power is converted another form of energy |
