Two similar conducting spheres having charge \(+ q\) and \(-q\) are placed at 'd' seperation fro....

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Two similar conducting spheres having charge \(+ q\) and \(-q\) are placed at 'd' seperation from each other in air. The radius of each ball is \(r\) and the separation between their centre is d(d≫r). Calculate the capacitance of the two ball system-
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