Engineering Board Exam Reviewer · Quantities and Units · easy

How many joules are in one kilowatt-hour?

1. 3.6×106 J
2. 3.6×103 J
3. 3.6×109 J
4. 1×103 J

Answer

A. 3.6×106 J

Solution

1 kWh=(1000 W)(3600 s)=3.6×106 J.

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