Chapter 6: Problem 12
(a) Determine the capacitance of an isolated conducting sphere of radius \(a\) in free space (consider an outer conductor existing at \(r \rightarrow \infty\) ). \((b)\) The sphere is to be covered with a dielectric layer of thickness \(d\) and dielectric contant \(\epsilon_{r}\). If \(\epsilon_{r}=3\), find \(d\) in terms of \(a\) such that the capacitance is twice that of \(\operatorname{part}(a) .\)
Short Answer
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Key Concepts
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