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ShashVerma
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Homework Statement
Q: Two conducting balls of radius 0.1 m are situated 3m apart in free space. Electrons are transferred from one ball to another at a rate of 10^13 per second. How long does it take for a p.d of 100 kv to develop?
Homework Equations
where ε0 is the electric constant (permittivity of vacuum)
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The Attempt at a Solution
First I calculated the charge needed for the particular voltage using the potential equation. Then I found C/s by multiplying the number of electrons by charge per electron. Finally I divided the charge needed by the charge per second to get the time to reach the charge. This answer does not match the book.
I think I need to take the increase in potential of one ball and the fall in potential of the other in account. But I have no idea how to do that?
Any help would be appreciated!
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