A-LevelPhysicsD.C. circuitsMay/June 2011Paper 1 Q361 Mark
Safety on railways is increased by using several electrical switches. In the diagram, switches P, Q, R, S and T control the current through a green lamp. [Figure 36.0] Which row does not allow the green lamp to light?
AP: closed, Q: closed, R: closed, S: open, T: closed
BP: closed, Q: open, R: closed, S: closed, T: open
CP: closed, Q: open, R: open, S: closed, T: closed
DP: open, Q: open, R: closed, S: open, T: closed
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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