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15 September, 20:19

Your utility company charges 13 cents per kilowatt-hour of electricity. What is the daily cost of keeping lit a 100 -watt light bulb for 13 hours each day

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  1. 15 September, 20:28
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    16.9 cents

    Step-by-step explanation:

    We are given the following information;

    Charge per kWh is 13 cents A bulb of a 100 Watt Number of hours in use 13 hours a day

    Required to determine the daily cost of operating the bulb;

    First, we will need to calculate the number kilowatts

    Note: 1 kW = 1000 W

    Power needed = (100 watt * 13 hours) : 1000

    = 1.3 kWh

    But;

    1 kWh = 13 cents

    Therefore;

    Cost = 1.3 kWh * 13 cents per kWh

    = 16.9 cents

    Thus; the daily cost of operating the bulb is 16.9 cents
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