O-LevelPhysicsElectricityOct/Nov 2024Paper 1 Q301 Mark
X is a piece of wire with length l, area a and resistance R. Wire Y is made from the same material and is connected to wire X to produce a component with a total resistance of R/2. What are the dimensions of Y and how is it connected to X? [Table: length, area, connection]
ARow A: 2l, 0.25a, in parallel
BRow B: 2l, 0.25a, in series
CRow C: 4l, 4a, in parallel
DRow D: 4l, 4a, in series
✓ Correct Answer
The correct answer is C: Row C: 4l, 4a, in parallel
📋 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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