With the help of constructional diagram, explain the working of LDR with neat sketch.

With the help of constructional diagram, explain the working of LDR with neat sketch.
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1 Answer

Answer :

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Working Principle

The resistance depends on the intensity of light, as resistance decreases with increase in light intensity.

Characteristics

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Applications of LDR

1. They are often used as light sensors.

2. They are used when there is a need to detect absences or presences of light like in a camera light meter.

3. Used in street lamps, alarm clock, burglar alarm circuits, light intensity meters, for counting the packages moving on a conveyor belt, etc.


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