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Paper 1
Electricity
LDR
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Created by
Ruby Wain
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Cards (6)
What does LDR stand for?
Light Dependent Resistor
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How does the resistance of an LDR change?
It decreases as the
amount
of light increases
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What happens to an LDR's resistance when it gets dark?
Its resistance
increases
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What are the components and functions of an LDR in a circuit?
Components:
Light Dependent Resistor (LDR)
Functions:
Senses
light levels
Changes resistance based on
light intensity
Used in
automatic lighting systems
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What is the effect of light on an LDR?
Light causes its
resistance
to decrease
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Why are LDRs used in automatic lighting systems?
They turn lights on and off based on
light levels
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