How to convert electric power in watts (W) to energy in joules (J).
You can calculate joules from watts and seconds, but you can't convert watts to joules since watt and joule units represent different quantities.
So The energy E in joules (J) is equal to the power P in watts (W), times the time period t in seconds (s).
E(J) = P(W) × t(s)
So
joules = watts × seconds
or
J = W × s
What is the energy consumption of an electrical circuit that has power consumption of 40 watts for time duration of 3 seconds?
E(J) = 40W × 3s = 120J
What is the energy consumption of an electrical circuit that has power consumption of 50 watts for time duration of 3 seconds?
E(J) = 50W × 3s = 150J
What is the energy consumption of an electrical circuit that has power consumption of 60 watts for time duration of 3 seconds?
E(J) = 60W × 3s = 180J
What is the energy consumption of an electrical circuit that has power consumption of 100 watts for time duration of 3 seconds?
E(J) = 100W × 3s = 300J
How to convert joules to watts ►
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