Question

A current of 4 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?

Answer 1

Here:
Current, I = 4 A
Time, t = 10 s
We know that I = Q/t.
So:
4 = Q/10
or Q = 4 x 10 = 40 C
Thus, the amount of electric charge that flows through the circuit is 40 coulombs.