Physics · Oct / Nov 2024 · Paper 11 · Question 18
5054Efficiency
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?
- A\frac{14}{74}
- B\frac{14}{60}
- C\frac{14}{46}
- D\frac{46}{60}
As printed in the paper
Show the answer
Correct answer: B. \frac{14}{60}
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.