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What is the SI unit of work?
1. candela
2. joule
3. Newton
4. can not be determined

1 Answer

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Best answer
Correct Answer - Option 2 : joule

CONCEPT:

  • Work is a form of energy.
  • It is the dot product of Force and Displacement.

\(W = \overrightarrow{F}.\overrightarrow{d}=Fd~cosθ\)

where W is the work done, F is the force, d is the displacement, and θ is the angle between F and d.

EXPLANATION:

  • Since work is a form of energy.
  • The unit of work will be the same as the unit of energy.
  • So the SI unit of work is Joule.
  • Hence the correct answer is option 2.

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