| A | B |
| Volt | unit used to measure electric potential difference |
| capacitance | ratio of charge to potential difference |
| electric potential difference | change in potential energy per unit charge |
| potential difference | change in electric potential as a charge is moved from a reference point |
| electric field lines | lines used to show the location and strength of an electric field |
| capacitor | device that stores chargeby having a specific capacitance |
| grounding | touching an object to earth to eliminate excesss charge |
| electric field | collection of all the force vectors on a test charge |
| voltmeter | device used to measure potential difference |