Question

If alpha particles falls on a neutral sphere at the rate of 1012 per second, then the net charge on the sphere

after 6.25 s is :​

Answer 1

charge on alpha particles = 2e e is charge of electron

no.of particles fallen in given time = 6.25 x 10¹²

net charge = 6.25 x 10¹² x 2e = 12.5e x 10¹²

or 2 micro columnb

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Answer 2

21.3438735 is the answer ............