Question

$1kWh$ is equal to:

• A. $3600000J$
• B. $360000J$
• C. $36000J$
• D. $3600J$

Answer 1

The correct option is A

$3600000J$

$$\begin{gathered} 1kWh=1kW\times 1h \\ =1000W\times 3600s \\ =1000J/s\times 3600s \\ =3600000J \end{gathered}$$

Hence, the correct answer is option (A) i.e. $3600000J$.