Question 41
Electrical Energy and PowerA generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. The energy consumed daily is
- A.0.96 kWh
- B.1.92 kWh
- C.9.60 kWh
- D.19.20 kWh
Show the answer and explanation
Answer: D (19.20 kWh)
Explanation
Total power = 10 × 60 + 5 × 40 = 800 W = 0.8 kW. In 24 hours the energy is 0.8 × 24 = 19.2 kWh.