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2024 · M/J · 5054/11 | Q32

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CIE-5054-2024-MJ-p11 · Question 32

Take the gravitational field strength as 9.8 N/kg (acceleration of free fall 9.8 m/s²), unless a question states otherwise.
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32 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? A B C D

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5054/11/M/J/24Cambridge O Level Physics 5054 · May/June 2024 · Paper 1 variant 1 · Question 32