Question

Which one of the following is not the unit of energy?
(a) joule
(b) newton-metre
(c) kilowatt
(d) kilowatt-hour

Answer 1

Answer:

kilowatt

Explanation:

hope it helps to you

Answer 2

(c) Kilowatt is not the unit of energy.

• Kilowatt is the unit of power.
• Power is the rate of doing work.

           Power = $\frac{Work Done}{Time}$

       So Work Done = Power × Time

                                 = Kilowatt . hour

      As the unit of work done and energy are same

      Hence, Kilowatt. hour is the unit of energy

• Joule, newton-metre and Kilowatt-hour are the units of energy.

       We know, Work done = Force . Displacement

                                            =  newton . metre

                                            =  Joule