A-LevelPhysicsD.C. circuitsOct/Nov 2015Paper 1 Q381 Mark
The diagram shows a four-terminal box connected to a battery and two ammeters. [Figure showing a four-terminal box connected to a battery and two ammeters] The currents in the two meters are identical. Which circuit, within the box, will give this result?
ADiagram A: Internal circuit showing two parallel branches. Top branch has a resistor. Bottom branch has two resistors in series.
BDiagram B: Internal circuit showing two parallel branches, each with a single resistor.
CDiagram C: Internal circuit showing two series resistors connected between 1 and 3, and 2 and 4. Another resistor between 3 and 4.
DDiagram D: Internal circuit showing two parallel branches. Top branch has two resistors in series. Bottom branch has a single resistor.
✓ Correct Answer
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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