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Created page with "==Key Stage 4== ===Meaning=== right|300px|thumb|The symbol for a '''light emitting diode'''. A '''light emitting diode''' ('''LED''') is..."
==Key Stage 4==
===Meaning===
[[File:LightEmittingDiodeSymbol.png|right|300px|thumb|The symbol for a '''light emitting diode'''.]]
A '''light emitting diode''' ('''LED''') is an [[Electrical Component|electrical component]] which [[emit]]s [[light]] when [[electricity]] passes through in one direction and prevents [[electricity]] from going in the reverse direction.
===About Light Emitting Diodes===
: '''LEDs''' have a low [[Electrical Resistance|resistance]] in one direction and [[emit]] [[light]] but a very high [[Electrical Resistance|resistance]] in the reverse direction and do not [[emit]] [[light]].
: '''LEDs''' can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]].
===Meaning===
[[File:LightEmittingDiodeSymbol.png|right|300px|thumb|The symbol for a '''light emitting diode'''.]]
A '''light emitting diode''' ('''LED''') is an [[Electrical Component|electrical component]] which [[emit]]s [[light]] when [[electricity]] passes through in one direction and prevents [[electricity]] from going in the reverse direction.
===About Light Emitting Diodes===
: '''LEDs''' have a low [[Electrical Resistance|resistance]] in one direction and [[emit]] [[light]] but a very high [[Electrical Resistance|resistance]] in the reverse direction and do not [[emit]] [[light]].
: '''LEDs''' can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]].