An electric machine makes use of 300 J of energy to do work in 10s. How much power does it use?
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An electric machine makes use of 300 J of energy to do work in 10s. How much power does it use?
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The power of an object doing a work W in a given time t is given by
where:
P = power
W = work
t = time
Solving for P
Therefore, the amount of power used is 30 W.