A-LevelPhysicsD.C. circuitsOct/Nov 2019Paper 2 Q611 Marks
A battery of electromotive force (e.m.f.) 12V and negligible internal resistance is connected to a network of two lamps and two resistors, as shown in Fig. 6.1. [Figure 6.1] The two lamps in the circuit have equal resistances. The two resistors have resistances R and 28Ω. The lamps are connected at junction X and the resistors are connected at junction Y. The current in the battery is 0.50A and the current in the lamps is 0.20A.
📋 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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