Question

72*10^{10} c flows for 90 min. find current flowing in ampere and milli ampere.

Answer 1

Charge = Q= 72*10^10 C

Time = t =90 mins

                  =90*60 seconds

                  =5400s

Now,

I= $\frac{Q}{t}$

∴ I =$\frac{72*10^{10}}{5400}$

∴ I = $\frac{72*10^8}{54}$

∴ I = $\frac{4}{3}$*10^8 A or 1.33*10^8 A

Hope this helps!