O-LevelPhysicsEnergy & WorkOct/Nov 2024Paper 1 Q181 Mark
Energy is transferred in a filament lamp at a rate of 60 W. The lamp wastes energy at a rate of 46 W. Which ratio is used to calculate the efficiency of the lamp?
A14/74
B14/60
C14/46
D46/60
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of energy & work 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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