What does a light dependent resistor do?

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What does a light dependent resistor do?

2007-07-04 06:24:17 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

Called a photoresistor, its resistance decreases with illumination. It's simply an inexpensive way to determine illumination intensity for things like light meters and to tell street lamps when it's time to turn on and such. It works by the photons exciting bound electrons into the conduction band.

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2007-07-04 06:27:21 · answer #1 · answered by Dr. R 7 · 2⤊ 0⤋

it is a resisor whose resistance varies when light is shone on it,
more light on it-> more resistance, or vise versa,

2007-07-04 06:29:12 · answer #2 · answered by Mr. Self Destruct 3 · 0⤊ 0⤋