One watt equals one joule per:
AMinute
BDecade
CMoment
DSecond
Answer & Solution
Correct answer: D. Second
1. Power measures how fast work is done.
2. The SI unit of time is the second.
3. One watt is one joule of work done per second.
4. So the answer is second.
_Source: NCERT Class 9 Science, Ch 7 'Work, Energy, and Simple Machines'_
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