Question

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.

Answer 1

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`.