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16 April, 20:38

A lightbulb has a resistance of 195 ohms and carries a current of 0.62 A. The power rating of the lightbulb, to the nearest whole number is blank W.

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  1. 16 April, 21:30
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    Wattage = I^2 * R

    R = 195 ohms

    I = 0.62 A

    Wattage = 0.62^2 * 195

    Wattage = 74.958

    Wattage = 75 watts to the nearest whole watt.
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