Consider two conducting spheres of same radius \(r\), separated by a distance \(d\). Charges \(+q\) and \(-q\) are placed on the two spheres. Find the force \(F\) acting on one sphere due to the other.

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## Comments

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TopNewestConsider the charge centred at the centre. Force sud be q^2/(d+2r)^2

I am guessing. Am I right?

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No. The spheres are conducting. Hence, the charges distribute in such a way that the potential at the surface is equal radially symmetric.

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@Kishore S Sheno Nope, I don't know the answer.

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@Kishore S Shenoy The separation is arbitary (of course, greater than 2r).

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Do you know the answer?

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@Kishore S Shenoy There are two spherical conductors : one having charge +q and other -q. Find force of interaction between them ( as a function of their common radius r and distance between their centres d).

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Ohh, the separation is not large? I suppose that is the catch?

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Can you please elaborate the question?

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