an electric device is plugged into a 110v wall socket. if the device consumes 500 w of power, what is the resistance of the device

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an electric device is plugged into a 110v wall socket. if the device consumes 500 w of power, what is the resistance of the device

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Diễm Kiều 3 years 2021-08-09T15:08:07+00:00 1 Answers 5 views 0

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    2021-08-09T15:09:26+00:00

    Answer: R=24.2Ω

    Explanation: Power is rate of work being done in an electric circuit. It relates to voltage, current and resistance through the following formulas:

    P=V.i

    P=R.i²

    P=\frac{V^{2}}{R}

    The resistance of the system is:

    P=\frac{V^{2}}{R}

    R=\frac{V^{2}}{P}

    R=\frac{110^{2}}{500}

    R = 24.2Ω

    For the device, resistance is 24.2Ω.

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