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Created page with "==Key Stage 4== ===Meaning=== right|300px|thumb|A picture of a '''transformer''' in the [[National Grid.]] A '''transformer''' is a device used to tak..."
==Key Stage 4==
===Meaning===
[[File:Transformer.png|right|300px|thumb|A picture of a '''transformer''' in the [[National Grid]].]]
A '''transformer''' is a device used to take the [[Alternating Current|alternating current]] in a [[circuit]] and transmit it to another [[circuit]] to produce [[electricity]] with a different [[Potential Difference|potential difference]] and [[Electrical Current|current]].
===About Transformers===
: '''Transformers''' use a coil of [[wire]] in one [[circuit]] (primary coil) wrapped around a [[Soft Iron|soft iron]] core and second coil of [[wire]] in another [[circuit]] (secondary coil). When an [[Alternating Current|alternating current]] passes through the primary coil this creates a changing [[Magnetic Field|magnetic field]] which induces an alternating [[Potential Difference|potential difference]] across the secondary coil. If that secondary coil is connected in a [[circuit]] it will produce an [[Alternating Current|alternating current]].
{| class="wikitable"
|-
|[[File:TransformerDiagram.png|center|600px]]
|-
| style="height:20px; width:200px; text-align:center;" |This [[diagram]] of a '''transformer''' shows that an [[Alternating Current|alternating current]] in the primary coil induces an alternating [[Potential Difference|potential difference]] in the secondary coil.
|}
===Meaning===
[[File:Transformer.png|right|300px|thumb|A picture of a '''transformer''' in the [[National Grid]].]]
A '''transformer''' is a device used to take the [[Alternating Current|alternating current]] in a [[circuit]] and transmit it to another [[circuit]] to produce [[electricity]] with a different [[Potential Difference|potential difference]] and [[Electrical Current|current]].
===About Transformers===
: '''Transformers''' use a coil of [[wire]] in one [[circuit]] (primary coil) wrapped around a [[Soft Iron|soft iron]] core and second coil of [[wire]] in another [[circuit]] (secondary coil). When an [[Alternating Current|alternating current]] passes through the primary coil this creates a changing [[Magnetic Field|magnetic field]] which induces an alternating [[Potential Difference|potential difference]] across the secondary coil. If that secondary coil is connected in a [[circuit]] it will produce an [[Alternating Current|alternating current]].
{| class="wikitable"
|-
|[[File:TransformerDiagram.png|center|600px]]
|-
| style="height:20px; width:200px; text-align:center;" |This [[diagram]] of a '''transformer''' shows that an [[Alternating Current|alternating current]] in the primary coil induces an alternating [[Potential Difference|potential difference]] in the secondary coil.
|}