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Created page with "==Key Stage 3== ===Meaning=== right|300px|thumb|A picture showing a [[voltmeter.]] An voltmeter is a measuring device used to measure the Pote..."
==Key Stage 3==
===Meaning===
[[File:Voltmeter.png|right|300px|thumb|A picture showing a [[voltmeter]].]]
An [[voltmeter]] is a measuring device used to [[measure]] the [[Potential Difference]] between two points in a [[circuit]].
===About Voltmeters===
: [[Voltmeter]]s are added in [[parallel]] to [[component]]s in a [[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.
{| class="wikitable"
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|[[File:Circuit+Diagram3.png|center|500px]]
|-
| style="height:20px; width:200px; text-align:center;" |A '''voltmeter''' placed in [[Parallel Circuit|parallel]] with a [[Electrical Bulb|bulb]].
|}
===Meaning===
[[File:Voltmeter.png|right|300px|thumb|A picture showing a [[voltmeter]].]]
An [[voltmeter]] is a measuring device used to [[measure]] the [[Potential Difference]] between two points in a [[circuit]].
===About Voltmeters===
: [[Voltmeter]]s are added in [[parallel]] to [[component]]s in a [[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.
{| class="wikitable"
|-
|[[File:Circuit+Diagram3.png|center|500px]]
|-
| style="height:20px; width:200px; text-align:center;" |A '''voltmeter''' placed in [[Parallel Circuit|parallel]] with a [[Electrical Bulb|bulb]].
|}