A 1mm cross section of copper wire is isolated. The charge that flows through

Question

the cross section is
Q t = 4t^2 + 5
How much current flows through the wire in 6 seconds?

Answer 1

I think you might mean:

Q(t) = 4 t^2 + 5

Q(6) = 4(6)^2 + 5
= 4 * 36 + 5

Answer 2

149A

Answer 3

Q(t)=4t^2+5
dQ/dt= 8t
t=6
8*6=48
I= 48A