Aprproximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour

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Aprproximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour

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Calantha 3 years 2021-08-18T20:42:12+00:00 1 Answers 393 views 0

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  1. thachthao
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    2021-08-18T20:43:27+00:00
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    Answer:

    Energy, E = 18 kJ

    Explanation:

    Given that,

    Power of the lightbulb, P = 5 W

    We need to find the electrical energy produced by the lightbulb in one hour. We know that electric power is given by the electrical energy produced per unit time.

    1 hour = 3600 seconds

    Electric power :

    P=\dfrac{E}{t}\\\\E=P\times t\\\\E=5\ W\times 3600\ s\\\\E=18000\ J            

    or

    E = 18 kJ

    So, 18 kJ of electrical energy a 5-W lightbulb convert to radiant and thermal energy in one hour.

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