everyday science MCQ #1128

One kilowatt-hour is the amount of electrical energy that is consumed by a 1000-watt appliance in:

everyday science MCQ #1128

  1. Question 1

    Q1. One kilowatt-hour is the amount of electrical energy that is consumed by a 1000-watt appliance in:

    • A) 30 minutes
    • B) 45 minutes
    • C) 1 hour
    • D) 1 hour and 15 minutes

    Answer: 1 hour

    Explanation: One kilowatt-hour equals the energy consumed by a 1000-watt (1 kW) device operating for exactly 1 hour; by definition, Power × Time = 1 kW × 1 h = 1 kWh.