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17 November, 11:22

An instructor furiously cranks an electric generator to simultaneously power 5 electric light bulbs. Each 5.4 V bulb is drawing 0.14 A of current. Ignoring all resistance in the rest of the circuit, what is the power output of the instructor? Give your answer in watts.

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  1. 17 November, 11:49
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    3.78 W

    Explanation:

    P = V x I

    P = 5.4 x 0.14 = 0.756 W (One bulb)

    Total power output : 5 x 0.756 = 3.78 W
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