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If you have 100 W expended over 20 s how much energy did it take? A. 5 j B. 80 j C. 2000 j D. 120 j?
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11 votes
If you have 100 W expended over 20 s how much energy did it take?

A. 5 j
B. 80 j
C. 2000 j
D. 120 j?

User MikeWyatt
by
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1 Answer

1 vote

Power = (work or energy) / (time)

100 W = (energy) / (20 sec)

Energy = 2,000 watt-sec

Energy = 2,000 J

User Yufei
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