What is 1 kWh equal to ?1$2.8 × 10^4 \text{ Joules}$2$3.6 × 10^4 \text{ Joules}$3$2.8 × 10^6 \text{ Joules}$4$3.6 × 10^6 \text{ Joules}$Answer & explanation+Correct answer: option 41 kWh = $3.6 × 10^6 \text{ Joules}$
