Three Coulombs of charge flow through a wire in 150 ms.
If the current ceases to flow (goes to zero Amps) for the following 850 ms, what is the average current over this one-second period?
The current starts flows for 0.15 seconds at a rate
I = 3 Coulombs/0.15 s = 20 A
Over the entire one-second period, the average current is 3 C/1 s = 3 A