Question

A TV shoots out a beam of electrons. The beam current is 10 mA. How many
electrons strikes the TV screen in each second ? How much charge strikes
the screen in a minutes ?​

Answer 1

Total charge, q = It = 10 A x 60 s = 600 C

We know that, q = ne

So no. of electrons, n = q/e = 600 / (1.6×10-19) = 375x1019