| A | B |
|---|
| electric current | the continuous flow of electric charges through a material |
| ampere (amp = A) | unit used for rate of current |
| electric circuit | a complete, unbroken path through which electric charges can flow |
| conductor | material that allows transfer of electric charge |
| insulator | material that does not allow transfer of charge easily if at all |
| conductor | material with atoms that have electrons that are bound loosely |
| insulator | material with atoms that have electrons that are bound tightly |
| silver, copper, iron | example of good conductors |
| rubber, glass, wood | example of good insulators |
| potential energy | energy of an object because of its position or height |
| battery | device that provides potential energy difference for a circuit |
| voltage | the difference in electrical potential energy between 2 places in a circuit |
| volt (V) | unit of measure for voltage |
| voltage | amount of force pushing an electric current through a circuit |
| voltage source | device that creates potential difference in an electric circuit |
| batteries & generators | examples of voltage sources |
| resistance | a measure of how difficult it is for charges to flow through a material |
| ohm ( ) | unit of measure of resistance |
| type of material | a factor that determines resistance of a wire |
| length | factor that determines resistance of a wire |
| diameter | factor that determins resistance of a wire |
| temperature | factor that determines resistance of a wire |
