A-LevelPhysicsD.C. circuitsOct/Nov 2015Paper 1 Q371 Mark
The electromotive force of a power supply is 120 V. It delivers a current of 1.2 A to a resistor of resistance 80 Ω and a current of 0.40 A to another resistor, as shown. [Figure showing a power supply connected to a parallel combination of two resistors]
A15 Ω
B20 Ω
C60 Ω
D75 Ω
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The correct answer is A. 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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