MCQ
One watt is equal to $.......$?
- AOne kilowatt per second.
- BOne kilo joule per second.
- ✓One joule per second.
- DOne joule per minute.
✓
Answer
Correct option: C.
One joule per second.
Watt is the $SI$ unit of power.
$\text{Power}=\frac{\text{Work done}}{\text{time}}$.
The $SI$ unit of work done is the same as energy, that is, joule and that of time is seconds. Therefore, one watt is equal to one joule per second.
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