A filament lamp transfers energy at a rate of $60\,\text{W}$. It dissipates energy at a rate of $46\,\text{W}$. Which ratio should be used to determine the efficiency of the lamp?
- A$\frac{14}{74}$
- B$\frac{14}{60}$
- C$\frac{14}{46}$
- D$\frac{46}{60}$
Physics 5054 · O Level · Efficiency