Question

Which of the following quantities has same S.I unit?
1. Work 
2. Energy
3. Power
4. Both 1 and 2

Answer 1

Correct Answer - Option 4 : Both 1 and 2

Option 4 is correct, i.e. Both 1 and 2.

• Work:
  • Work is the product of force and displacement. Work transfers energy from one place to another, or one form to another.
  • The SI unit of work is the joule (J).
  • Joule is equal to the work done by a force of one newton acting through one meter.
  • Dimension Formula for Joule is [M¹L²T⁻²].
  • 1 Joule = 10⁷ ergs.
• Energy:
  • The SI unit of energy is the joule (the symbol for it is J).​
• Power:
  • It is defined as the work per unit of time.
  • Its S.I unit of power is Watt.