1A is 1C/s
You have
73mC/9s = 8.11mA
the net charge is not relevant here, since all we need is the number of Coulombs.
A net charge of 73 mC passes through the cross-sectional area of a wire in 9 s .
What is the current in the wire? The fun- damental charge is 1.602 × 10−19 C.
1 answer