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===Meaning===
[[File:AnalogueVoltmeter.png|right|300px|thumb|A picture showing an analogue [[voltmeter]].]]
A [[voltmeter]] is a measuring device used to [[measure]] the [[Potential Difference|potential difference]] between two points in a [[Electrical Circuit|circuit]].
===About Voltmeters===
: [[Voltmeter]]s are added in [[Parallel Circuit|parallel]] to [[Electrical Component|component]]s in a [[Electrical Circuit|circuit]] to find the [[Potential Difference|potential difference]] between two points.
: An ideal [[voltmeter]] has infinite [[Electrical Resistance|resistance]] because otherwise adding an [[voltmeter]] to a [[circuit]] would change the [[Potential Difference]] between two points.
: [[Voltmeter]]s can be [[Analogue Voltmeter|analogue]] with a needle pointing to numbers on a dial or it can be [[Digital Voltmeter|digital]] with a number display.
| style="height:20px; width:200px; text-align:center;" |A '''voltmeter''' placed in [[Parallel Circuit|parallel]] with a [[Electrical Bulb|bulb]].
|}
==Key Stage 4==
===Meaning===
A [[voltmeter]] is a measuring device used to [[measure]] the [[Potential Difference|potential difference]] between two points in a [[Electrical Circuit|circuit]].
===About Voltmeters===
: [[Voltmeter]]s are added in [[Parallel Circuit|parallel]] to [[Electrical Component|component]]s in a [[Electrical Circuit|circuit]] to find the [[Potential Difference|potential difference]] between two points.
: An ideal [[voltmeter]] has infinite [[Electrical Resistance|resistance]] because otherwise adding an [[voltmeter]] to a [[circuit]] would change the [[Potential Difference|potential difference]] between the two points.
: [[Voltmeter]]s can be [[Analogue Voltmeter|analogue]] with a needle pointing to numbers on a dial or it can be [[Digital Voltmeter|digital]] with a number display.