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===About Voltmeters===
: [[Voltmeter]]s are added in [[Parallel Circuit|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.