Question 43
Electrical Energy and PowerA household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it for 20 days?
- A.N4.80
- B.N48.00
- C.N480.00
- D.N4800.00
Show the answer and explanation
Answer: A (N4.80)
Explanation
Energy = 0.2 kW × 24 h × 20 = 96 kWh. Cost = 96 × 5k = 480k = N4.80.