A-LevelPhysicsD.C. circuitsOct/Nov 2019Paper 1 Q361 Mark
Three identical resistors are connected between terminals P and Q in different networks X, Y and Z as shown. [Figure showing three resistor networks: X (two parallel resistors in series with one), Y (three resistors in series), Z (two series resistors in parallel with one)] What is the order of increasing combined resistance between P and Q (lowest first)?
AX → Y → Z
BX → Z → Y
CY → X → Z
DY → Z → X
✓ Correct Answer
The correct answer is C: Y → X → Z
📋 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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