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10 November, 09:30

Your electricity bill says 834-kWh of consumption. With this amount of energy, how many 59-W light bulbs can be powered for an average of 7 hours?

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  1. 10 November, 12:13
    0
    2019 light bulbs

    Explanation:

    So the electrical energy consumed by each 59-W light bulb within 7 hours is the product of the power and time duration

    E = Pt = 59 * 7 = 413 Wh or 0.413 kWh

    If each light bulb consumes 0.413 kWh, then the total number of light bulbs needed to consume 834 kWh would be

    834 / 0.413 = 2019 light bulbs
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