Comment convertir puissance électrique en watts (W) to energy en kilojoules (kJ).
You can calculate kilojoules from watts and seconds, but you can't convert watts to kilojoules sence watt and kilojoule units represent different quantities.
L'énergie E en kilojoules (kJ) is equal to the power P en watts (W), times the time period t en seconds (s):
E(kJ) = P(W) × t(s) / 1000
Donc
kilojoules = watts × secondes / 1000
ou
kJ = W × s / 1000
What is the energy consumption of an electrical circuit that has power consumption of 300 watts fou time duration of 3 seconds
E(kJ) = 300W × 3s / 1000 = 0,9kJ
