Question

A kilowatt-hour is a unit of ________?

Answer 1

1. Electric energy is generally measured by kilowatt-hour unit $\left(\mathrm{kWh}\right)$.
2. $1$ unit of electric energy is equal to $1\mathrm{kWh}$.
3. $1\mathrm{kWh}=1000\mathrm{Wh}=\left(1000\times 3600\right)\mathrm{Ws}=3.6\times {10}^6\mathrm{J}$.

Hence, a kilowatt-hour is a unit of energy.