What is the SI unit of work or energy?

  1. Horsepower
  2. Hertz
  3. Joule
  4. Ampere

The SI unit of energy/work is the joule (J), named for English physicist James Prescott Joule (1818 – 1889).

Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.

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