Difference between revisions of "Light Dependent Resistor"
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Revision as of 16:11, 27 February 2019
Key Stage 4
Meaning
A light dependent resistor is a resistor which changes resistance depending on the intensity of light that it is exposed to.
About Light Dependent Resistors
- Light dependent resistors decrease resistance as the intensity of light increases.
- A light dependent resistor can be used to control the current passing through a circuit. If the potential difference is constant then the current decreases as the light intensity decreases.
- A light dependent resistor can be used to control the potential difference of another component in series with it. If the light intensity on the light dependent resistor is decreased then the potential difference across other components will decrease.
- Light dependent resistors can be used in security lights and street lamps which activate depending on how dark it is.