Question:
How is kilowatt-hour related to the SI unit of energy?Establish the relation.
Answer:
SI unit of energy is Joul.
And 1kWh = 1 kW x 1h = 1000 W x 3600 s
Therefore, 1 watt- second = 1 Joul
1kWh = 3600000 Joul = 1 unit
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