1 kilowatt hour =
Correct answer: B. 3.6 x 10^6 J
- A. 1.6 x 10^-19 J
- B. 3.6 x 10^6 J
- C. 9.1 x 10^31J
- D. 1.67 x 10^-27 J
Explanation
The commercial unit of electrical energy is a kilowatt-hour (kWh). The energy generated by a kilowatt power source in 1 hour is 1 kWh.1kWh = 1kW × 1hour1kWh = 1000W (Joules/seconds) × (60 × 60) seconds1kWh = 3.6 × 106 J
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