| A | B |
|---|
| voltmeter | used to measure electric potential difference |
| ammeter | used to measure current |
| motor | device that converts electric energy into motion (kinetic energy) |
| light bulb | device that converts electric energy into light (heat energy) |
| variable resistor | device that can be adjusted to uses different amounts of electric energy |
| resistor | device that uses electric energy in the circuit |
| battery | several cells connected together – increases potential difference or time before source runs out |
| cell | source of electric potential difference used to power a circuit |
| closed switch | device used to turn a circuit on or off (in this case, on) |
| open switch | device used to turn a circuit on or off (in this case, off) |
| wire | conductor used to connect one device to another |
