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A total charge Q is distributed over two concentric hallow uniform sphere of radii a and b, (bgta) such a way that their surface charge densities are qual. The potential at the common centre is given by : |
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Answer» `(Q)/(4piepsilon_(0))((a+b))/((a^(2)+b^(2))` `Q'b^(2)=QA^(2)-Q'a^(2)` `Q'=(Qa^(2))/(a^(2)+b^(2))` `(KQ-Q')/(b)+(kQ')/(a)` `(K)/(b)[Q-(Qa^(2))/(a^(2)+b^(2))]+k[(Qa)/(a^(2)+b^(2))]` `(kQ(b+a))/(a^(2)+b^(2))`
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