O-LevelPhysicsEnergy & WorkOct/Nov 2024Paper 1 Q111 Mark
Which equation is used to calculate the efficiency of an energy transfer?
Aefficiency = useful energy output / total energy input
Befficiency = total energy input / useful energy output
Cefficiency = total energy output / total power input
Defficiency = (useful energy output) × (total energy input)
✓ Correct Answer
The correct answer is A. 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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