How to 変換 energy in joules (J) to 電気 power in watts (W).
You can 計算 watts from joules and seconds, but you can't 変換 joules to watts, since joule and watt units represent different quantities.
The power P in watts (W) is equal to the energy E in joules (J), divided by the 時間 period t in seconds (s):
P(W) = E(J) / t(s)
So
watt = joule / second
or
W = J / s
What is the power consumption of an electrical circuit that has energy consumption of 90 joules for 時間 duration of 3 seconds
P(W) = 90J / 3s = 30W