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: '''Light dependent resistors''' can be used in security [[light]]s and street lamps which activate depending on how dark it is.
===IV Graph===
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |In this [[Circuit Diagram|circuit diagram]] the [[light]] intensity is high, which causes the [[Electrical Resistance|resistance]] of the '''LDR''' to be low. As a [[result]] the [[Potential Difference|potential difference]] across the [[electrical bulb|lamp]] will be low (0.1V) and the [[Electrical Current|current]] through the [[Electrical Bulb|lamp]] will be low. So in bright [[light]] the [[Electrical Bulb|lamp]] will remain unlit.
|}
===IV Graph===
{| class="wikitable"
|[[File:IVGraphLDR.png|center|300px]]
|}
====Description====
The [[IV Graph]] for a [[Light Dependent Resistor|light dependent resistor]] shows that:
*At a high [[light]] intensity the [[Electrical Current|current]] increases rapidly with the [[Potential Difference|potential difference]]
*At a low [[light]] intensity the [[Electrical Current|current]] increases slowly with the [[Potential Difference|potential difference]].
====Explanation====
: The [[Electrical Resistance|resistance]] of an '''LDR''' increases as the [[light]] intensity decreases.