Question

$1Kwh=\_\_\_\_\_\_\_\_J$

Answer 1

1. $1$ kilowatt-hour is the energy produced by $1$-kilowatt power source in $1$ hour.

2. $$\begin{gathered} 1KWh=1KW\times 1h=1000W\times 3600s \\ 1KWh=3.6\times {10}^{6}J\left(1W\times 1s=1J\right) \end{gathered}$$

Hence, $1Kwh=3.6\times {10}^{6}J$.