The power *P* in kilowatts (kW) is equal to the energy *E* in joules (J) divided by 1000 times the time period *t* in seconds (s):

*P*_{(kW)} = *E*_{(J)} / (1000 * *t*_{(s)})

So

Kilowatts = Joules / (1000 * seconds)

or

kW = J / (1000 * s)

Find the power consumption of an electrical circuit that has an energy consumption of 90 joules for a time duration of 3 seconds.

*P*_{(kW)} = 90J / (1000 * 3s) = 0.03kW

kW to Joules ►

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