The capacitance (C) for an isolated conducting sphere of radius (a ) is given by 4πε 0 a…
Physics · JEE Main · NTA Exams — Electrostatics
The capacitance (C) for an isolated conducting sphere of radius (a ) is given by 4πε0a. This sphere is enclosed within an earthed concentric sphere. The ratio of the radii of the spheres being \(\frac{\mathrm{n}}{(\mathrm{n}-1)}\) then the capacitance of such a sphere will be increased by a factor-
- n
- \(\frac{\mathrm{n}}{(\mathrm{n}-1)}\)
- \(\frac{(\mathrm{n}-1)}{\mathrm{n}}\)
- a.n
Answer
(A) n
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