Changes

==Key Stage 3=====Meaning===[[File:Resistor.png|right|300px|thumb|A picture of a [[resistor]].]]A [[resistor]] is a [[Electrical Component|component]] in an [[circuit|electrical circuit]] which makes it difficult to [[electricity]] to pass through it. ===About Resistors===: A [[resistor]] is a [[Electrical Component|component]] designed to have a particular [[Electrical Resistance|resistance]].: [[Resistor]]s are added to [[circuit]]s to control the [[Electrical Current|current]] which will pass through for a certain [[Potential Difference|potential difference]].: The greater the [[Electrical Resistance|resistance]] of a [[resistor]] the smaller the [[Electrical Current|current]] will be.: The [[Electrical Resistance|resistance]] of a [[resistor]] can be found by attaching an [[ammeter]] in [[Series Circuit|series]] with the [[resistor]] and a [[voltmeter]] in [[Parallel Circuit|parallel]] with the [[resistor]].: All [[electrical component|component]]s in a [[circuit]] act as [[resistor]]s, including [[wire]]s. The longer a [[wire]] the more [[Electrical Resistance|resistance]] it will have to a [[Electrical Current|current]].