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Created page with "==Key Stage 4== ===Meaning=== right|300px|thumb|The symbol for a '''light dependent resistor'''. A '''light dependent resistor''' is..."
==Key Stage 4==
===Meaning===
[[File:LightDependentResistorSymbol.png|right|300px|thumb|The symbol for a '''light dependent resistor'''.]]
A '''light dependent resistor''' is a [[resistor]] which changes [[Electrical Resistance|resistance]] depending on the intensity of [[light]] that it is exposed to.
===About Light Dependent Resistors===
: '''Light dependent resistors''' decrease [[Electrical Resistance|resistance]] as the intensity of [[light]] increases.
: A '''light dependent resistor''' can be used to control the [[Electrical Current|current]] passing through a [[circuit]]. If the [[Potential Difference|potential difference]] is constant then the [[Electrical Current|current]] decreases as the [[light]] intensity decreases.
: A '''light dependent resistor''' can be used to control the [[Potential Difference|potential difference]] of another [[Electrical Component|component]] in [[Series Circuit|series]] with it. If the [[light]] intensity on the '''light dependent resistor''' is decreased then the [[Potential Difference|potential difference]] across other [[Electrical Component|components]] will decrease.
: '''Light dependent resistors''' can be used in security [[light]]s and street lamps which activate depending on how dark it is.
===Meaning===
[[File:LightDependentResistorSymbol.png|right|300px|thumb|The symbol for a '''light dependent resistor'''.]]
A '''light dependent resistor''' is a [[resistor]] which changes [[Electrical Resistance|resistance]] depending on the intensity of [[light]] that it is exposed to.
===About Light Dependent Resistors===
: '''Light dependent resistors''' decrease [[Electrical Resistance|resistance]] as the intensity of [[light]] increases.
: A '''light dependent resistor''' can be used to control the [[Electrical Current|current]] passing through a [[circuit]]. If the [[Potential Difference|potential difference]] is constant then the [[Electrical Current|current]] decreases as the [[light]] intensity decreases.
: A '''light dependent resistor''' can be used to control the [[Potential Difference|potential difference]] of another [[Electrical Component|component]] in [[Series Circuit|series]] with it. If the [[light]] intensity on the '''light dependent resistor''' is decreased then the [[Potential Difference|potential difference]] across other [[Electrical Component|components]] will decrease.
: '''Light dependent resistors''' can be used in security [[light]]s and street lamps which activate depending on how dark it is.