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Figure shows a solid metal sphere of radius a surrounded by a concentric thin metal shell of radius 2a. Initially both are having charges Q each, When the two are connected by a conducting wire as shown in the figure, then amount of heat produced in this process will be : A. `(KQ^(2))/(2a)`B. `(KQ^(2))/(4a)`C. `(KQ^(2))/(6a)`D. `(KQ^(2))/(8a)` |
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Answer» Correct Answer - B `E_(1)=(KQ^(2))/(2a)+(KQ^(2))/(4a)+(KQ)/(2a).Q` `=(KQ^(2))/(a)+(KQ^(2))/(4a)=(5Q^(2))/(4a)` `E_(1)=(K(2Q)^(2))/(4a)=(KQ^(2))/(a)` `E_(i)-E_(f)=H=(KQ^(2))/(4a)` |
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