alleryThe SI unit of work and energy is:
Awatt
Bjoule
Cnewton
Dpascal
Answer & Solution
Correct answer: B. joule
1. Work has dimensions [M L² T⁻²].
2. The SI unit is the joule (J), defined as 1 N · 1 m.
3. Watt is the unit of power (J s⁻¹); newton is force; pascal is pressure.
_Source: syllabus Physics Ch 5 "Work, Energy and Power", §5.2, p. 76_
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