A 2-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents per kWh, what is the co

Question

A 2-kW electric heater takes 15 min to boil a quantity of water. If this is done once a day and power costs 10 cents per kWh, what is the cost of its operation for 30 days?

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RobertKer 3 years 2021-08-07T07:45:34+00:00 1 Answers 138 views 0

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  1. Latifah
    0
    2021-08-07T07:47:17+00:00
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    Answer:

    $1.50

    Explanation:

    Given data

    power P= 2 kW

    time t= 15 min to hours = 15/60= 1/4 h

    cost of power consumption per kWh= 10 cent = $0.1

    We are expected to compute the cost of operating the heater for 30 days

    but let us computer the energy consumption for one day

    Energy of heater  for one day= 2* 1/4 = 0.5 kWh

    the cost of operating the heater for 30 days= 0.5*0.1*30= $1.50

    Hence it will cost  $1.50 for 30 days operation

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