2. Questions Bank
  3. 9th Class
  4. Science
  5. Work and energy

9th Class Science Work and energy Question Bank 9th CBSE Science Work and energy

  • question_answer
      (a) What is commercial unit of energy? Give its relation with SI unit of energy. (b) An electrical oven is rated 2500 W. How many units of energy does it consume in 4 h?

    Answer:

       (a) Commercial unit of energy is kilowatt hour (kWh).      The SI unit of energy is joule. (b) Number of unitsunits Its SI unit is watt (W)


You need to login to perform this action.
You will be redirected in 3 sec spinner