O-LevelPhysicsElectricity5054/11 · Oct/Nov 2014 · Q351 Mark

In the circuit shown, R is a light-dependent resistor. Its resistance decreases when the intensity of the light shining on it increases. The light intensity on R increases. What happens to the brightness of the two lamps L₁ and L2?

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AL₁: decreases, L₂: decreases

BL₁: decreases, L₂: increases

CL₁: stays the same, L₂: decreases

DL₁: stays the same, L₂: increases

✓ Correct answer

D: L₁: stays the same, L₂: increases

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Topic: Electricity, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2014 Paper 1 Variant 1, question 35.

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