A-LevelPhysicsD.C. circuitsOct/Nov 2012Paper 1 Q371 Mark
The ammeter reading in the circuit below is I. [Figure showing a simple circuit with a resistor R and ammeter A] Another circuit containing the same voltage supply, two switches, an ammeter and two resistors each of resistance R, is shown. [Figure showing a more complex circuit with two resistors R, two switches S1, S2, and an ammeter A] Which row is not correct? [Table with states of S1, S2 and ammeter reading]
AS1 closed, S2 closed, ammeter reading I
BS1 closed, S2 open, ammeter reading I
CS1 open, S2 closed, ammeter reading I
DS1 open, S2 open, ammeter reading 0
✓ 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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