Definition:SI/Energy/Kilowatt-Hour
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Definition
The kilowatt-hour is an SI unit of energy.
It is defined as being:
Conversion Factors
\(\ds \) | \(\) | \(\ds 1\) | kilowatt-hour | |||||||||||
\(\ds \) | \(=\) | \(\ds 10^6\) | milliwatt-hours | |||||||||||
\(\ds \) | \(=\) | \(\ds 3 \cdotp 6\) | megajoules | |||||||||||
\(\ds \) | \(=\) | \(\ds 3 \cdotp 6 \times 10^6\) | joules |
Symbol
- $\mathrm {kWh}$
The symbol for the kilowatt-hour is $\mathrm {kWh}$.
Its $\LaTeX$ code is \mathrm {kWh}
.
Linguistic Note on Kilo
The prefix kilo- derives from the Greek word χίλιοι (khilioi), which means thousand.
Sources
- 1969: J.C. Anderson, D.M. Hum, B.G. Neal and J.H. Whitelaw: Data and Formulae for Engineering Students (2nd ed.) ... (previous) ... (next): $2.$ Unit Conversion Factors
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): kilowatt-hour
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): kilowatt-hour