Question

10000 alpha particles pass per minute through a straight tube of radius r . what is the resulting electric current.?

Answer 1

Charge on one alpha particle is, q = 3.2 X 10^-19 C

So, total charge passing through the tube in 1 minute is = 10000 X 3.2 X 10^-19 C

=3.2 X 10^-15 C

Current = charge flow per second = (3.2 X 10^-15)/60 = 5.33 X 10^-17 A

Which is approximately, 0.5 X 10^-16 A

Answer 2

Here It is :

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