The diagram shows a four-terminal box connected to a battery and two ammeters. [Diagram shows a battery connected to Ammeter A, which is connected to terminal 1 of a four-terminal box. Terminal 3 of the box is connected back to the battery. Terminals 2 and 4 are not externally connected in this diagram.] The currents in the two ammeters are identical. Which circuit, within the box, gives this result?
✓ Correct Answer
The correct answer is D: Two independent paths: a resistor between terminals (1,3) and a resistor between terminals (2,4).
📋 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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