everyday science MCQ #50168

You connect a heater for 2 h at 1.5 kW. How much energy did it use?

everyday science MCQ #50168

  1. Question 1

    Q1. You connect a heater for 2 h at 1.5 kW. How much energy did it use?

    • A) 0.75 kWh
    • B) 1.5 kWh
    • C) 3 kWh
    • D) 6 kWh

    Answer: 3 kWh

    Explanation: Energy in kilowatt-hours equals power in kilowatts multiplied by time in hours: E = P × t = 1.5 kW × 2 h = 3 kWh. Kilowatt-hours are the standard unit used by electricity suppliers for billing purposes.