A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2023 · 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
C: the useful energy output from the system divided by the total energy input to the system
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