What is 1 kWh equal to ?

$2.8 × 10^4 \text{ Joules}$ $3.6 × 10^4 \text{ Joules}$ $2.8 × 10^6 \text{ Joules}$ $3.6 × 10^6 \text{ Joules}$

$3.6 × 10^6 \text{ Joules}$

1 kWh = $3.6 × 10^6 \text{ Joules}$