| A | B |
|---|
| friction | rubbing two objects together |
| conduction | when a charged object touches another object resulting in charging |
| induction | charged object is brought near another object resulting in charging |
| energy | needed to separate positive and negative charges |
| circuit | complete or closed path through which an electrical charge flows |
| three basic parts of a circuit | source of energy, path, resistor |
| current | how much electric charge flows past a point in a circuit during a given time |
| amps | how current is measured |
| electric potential energy | the total stored energy of all the charges |
| potential difference | the change in potential energy divided by the total charge |
| volts | what is potential difference measured in |
| resistance | property of materials that indicates how much energy changes to thermal energy and light as charge flows through the material |
| ohms | how resistance is measured |
| + | charge of a proton |
| - | charge of an electron |
| 0 | charge of a neutron |
| examples of insulators | rubber, plastic, glass |
| examples of conductors | humans, copper, steel |
| insulator | charges cannot move freely in |
| conductor | charges can move freely in |
