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    Lightbulbs in a series/parallel

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    a) Three bulbs in series :

    Power dissipated in a resistance is given by the following expression :

    P = VI = I^2R = V^2/R .......(1)

    Power rating of a resistance gives the power dissipation that will take place in the resistance when full rated voltage is applied across it. Thus, 60 W bulb will dissipate 60 W power if full ...

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