Single Answer MCQ
Q-00019390
If a device consumes 500 W of power for 10 hours, how much energy does it use in kilowatt-hours?
1
5 kWh
2
50 kWh
3
500 kWh
4
0.5 kWh
Answer and Solution
Answer
A. 5 kWh
Solution:
Energy = Power × Time = (500 W / 1000) × 10 = 5 kWh.
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