# What is the SI unit of work?

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

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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.