A-LevelPhysicsD.C. circuitsFeb/Mar 2020Paper 1 Q331 Mark
A battery is connected to three resistors of resistances 12Ω, 6Ω and 2Ω, as shown. [Figure showing a circuit diagram with a 3 A battery connected to a parallel combination of 6Ω and 2Ω resistors, which is in series with a 12Ω resistor] The current from the battery is 3 A. What is the value of the ratio power dissipated in the resistor of resistance 6Ω / power dissipated in the resistor of resistance 2Ω?
A1/3
B4/3
C2/1
D3/1
✓ Correct Answer
The correct answer is B: 4/3
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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