# The filament of an electric lamp draws a current of 0.4 A which lights for 3 hours. Calculate the amount of charge that flows through the circuit.

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The filament of an electric lamp draws a current of 0.4 A which lights for 3 hours. Calculate the amount of charge that flows through the circuit.

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Here, current, I = 0.4 A and time, t = 3 hours = (3 xx 60 xx 60)s = 10800 s
charge, Q = I xx t = (0.4 A)(10800 s) = 4320 C.