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How to convert Joules to Watts: The power P in watts (W) is equal to the energy E in joules (J) divided by the time period t in seconds (s): P_{(W)} = E_{(J)} / t_{(s)} |
NOTE: It is possible to calculate watts from joules and seconds, but you can't convert 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 time period t in seconds (s): P_{(W)} = E_{(J)} / t_{(s)} So Watts = Joules / Seconds or W = J / s |
Example Find the power consumption of an electrical circuit that has an energy consumption of 90 joules for a time duration of 3 seconds. P_{(W)} = 90J / 3s = 30W |
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