A-LevelPhysicsWork, energy and powerOct/Nov 2023Paper 1 Q161 Mark
What is meant by the efficiency of a system?
Athe total energy input to the system divided by the useful energy output by the system
Bthe useful energy output from the system divided by the energy wasted by the system
Cthe useful energy output from the system divided by the total energy input to the system
Dthe energy wasted by the system divided by the total energy input to the system
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of work, energy and power 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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