The current of 2.5A is drawn by a filament of an electric bulb for 30 minutes. Find the amount of electric charge .
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A current (i) is flowing through the filament of an electric bulb for time t=20minIf a net charge Q, flows across any cross-section of a conductor in time t, then the current i, through the cross-section is, i= tQ
Q=i×t=0.25×20×60=300C
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