Physics · May / June 2024 · Paper 11 · Question 32
5054Action and use of circuit components
A light-dependent resistor (LDR) is to be used as an input sensor for an intruder alarm circuit. When there is no light on the LDR, the lamp switches on. The resistance of the fixed resistor is less than that of the lamp. Which diagram shows the circuit?
- ACircuit A
- BCircuit B
- CCircuit C
- DCircuit D
As printed in the paper
Show the answer
Correct answer: B. Circuit B
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