A 4-kW resistance heater in a water heater runs for 3 hours to raise the water temperature to the desired level. Determine the amount of ele

Question

A 4-kW resistance heater in a water heater runs for 3 hours to raise the water temperature to the desired level. Determine the amount of electric energy used in both kWh and kJ.

in progress 0
Thu Nguyệt 1 year 2021-07-23T05:41:45+00:00 1 Answers 510 views 0

Answers ( )

    1
    2021-07-23T05:42:50+00:00

    Answer:

    12kWhr

    Explanation:

    Energy = Power * Time

    Power = 4kW

    Time = 3hrs

    Substitute into the formula

    Energy used up = 4kW * 3hrs

    Energy used up = 12kWhr

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )