Multiple choice general knowledge science & technology

choose the odd one out.

  1. joule

  2. calorie

  3. kilo-watt

  4. kilo-watt hour
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kilowatt (kW) is the odd one out because it's a unit of POWER (rate of energy use), while joule, calorie, and kilowatt-hour are all units of ENERGY or work done. Power = Energy / Time, so 1 kW = 1 kJ/s. The kilowatt-hour (kWh) is a unit of energy equal to 1 kW used for 1 hour.

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