The commercial unit of electrical energy is kilowatt-hour (kWh), which is equal to
- A. 3.6 \times 10^{6} \text{ J} ✓
- B. 3.6 \times 10^{3} \text{ J}
- C. 10^{3} \text{ J}
- D. 1 J
Correct Answer: A. 3.6 \times 10^{6} \text{ J}
Explanation
1 kilowatt-hour (kWh) is the commercial unit of electrical energy. 1 \text{ kWh} = 1000 \text{ W} \times 3600 \text{ s} = 3.6 \times 10^6 \text{ J}.
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