A-LevelPhysicsD.C. circuitsMay/June 2013Paper 1 Q351 Mark
Two wires P and Q made of the same material are connected to the same electrical supply. P has twice the length of Q and one-third of the diameter of Q, as shown in the diagram. [Figure showing two wires P and Q connected in a circuit, with lengths and diameters labeled] current in P What is the ratio ? current in Q
A2/3
B2/9
C1/6
D1/18
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The correct answer is D. This question tests the candidate's understanding of d.c. circuits within the Physicssyllabus. The examiner's mark scheme requires...
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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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