# Resistance of Light Dependent Resistor (LDR)

Is there a mathematical expression relating the resistance of Light Dependent Resistor (LDR) with light intensity?

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Would electronics.stackexchange.com be a better home for this question? – Qmechanic Feb 21 '13 at 20:24

For some types it's quite simple.

Note: This is a log-log plot of resistance against illuminance (in Lux) not luminous intensity (Candela, cd)

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