A-LevelPhysicsD.C. circuitsMay/June 2023Paper 1 Q311 Mark
A resistor of resistance R is connected across a cell of electromotive force (e.m.f.) E and negligible internal resistance. Which single change to the circuit would lead to the largest increase in the power dissipated in the resistor?
Adoubling the value of E
Bdoubling the value of R
Chalving the value of E
Dhalving the value of R
✓ Correct Answer
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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