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Light Dependent Resistors (LDRs)

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Questions and Answers

What happens to the resistance of a light dependent resistor when light falls on it?

It becomes infinite

It decreases (correct)

It remains constant

It increases

What is the resistance of a light dependent resistor in dark conditions?

Very high (correct)

Constant

Very low

Zero

What happens to the resistance of a light dependent resistor when it absorbs light?

It increases

It decreases drastically (correct)

It becomes infinite

It remains constant

Study Notes

Light Dependent Resistor (LDR)

When light falls on a light dependent resistor, its resistance decreases.
In dark conditions, the resistance of a light dependent resistor is high.
When a light dependent resistor absorbs light, its resistance decreases, making it more conductive.

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Description

Test your knowledge about light dependent devices and their behavior with light. Learn about the resistance changes in LDRs depending on light exposure.