A-LevelPhysicsD.C. circuitsMay/June 2014Paper 1 Q341 Mark
In the circuit shown, a light-dependent resistor (LDR) is connected to two resistors R₁ and R₂. The potential difference (p.d.) across R₁ is V₁ and the p.d. across R₂ is V₂. The current in the circuit is I. [Figure 34.1] Which statement about this circuit is correct?
AThe current I increases when the light intensity decreases.
BThe LDR is an ohmic conductor.
CThe p.d. V₂ increases when the light intensity decreases.
DThe ratio V₁/V₂ is independent of light intensity.
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The correct answer is D. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
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