PrepRung
Sign inSign up free

NDA 2018 GAT · General Knowledge · Units and Measurements · easy

NOT a unit of energy?

Single correct option

Which one of the following is NOT a unit of energy?
  1. A. Joule
  2. B. Watt
  3. C. Kilowatt-hour
  4. D. Calorie
Show answer and solution

Answer: (B) Watt

The joule is the SI unit of energy, the kilowatt-hour is the commercial unit used for electricity bills, and the calorie is a unit of heat energy. The watt is joule per second, the unit of power, which is the rate of doing work. Confusing kilowatt-hour with a unit of power is the common trap because it contains watt.
Report a mistake

Original question written in the NDA 2018 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake