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10 September, 11:49

The filament of an electric bulb draws a current of 0.4 ampere. Calculate the amount of charge flowing through the filament if the bulb glows for 2 hours. Also calculate the number of electrons passed.

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  1. 10 September, 12:10
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    Here I = 0.4 amp and t=2hr or 2*60*60 sec

    We known I=nQ/t where Q is charge and n is no of charge.

    n=It/Q

    0.4x (2x60x60) / 1.6x10^-19
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