A $100\,\text{W}$ lamp is turned on for five hours each day over three weeks. The price of one unit of electricity is $\$0.24$. What is the cost of running the lamp for this period?
- A$\$0.36$
- B$\$0.84$
- C$\$2.52$
- D$\$25.20$
Physics 5054 · O Level · Power