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2. Electric Potential and Capacitance
easy
The outer sphere of a spherical air capacitor is earthed. For increasing its capacitance
A
Vacuum is created between two spheres
B
Dielectric material is filled between the two spheres
C
The space between two spheres is increased
D
The earthing of the outer sphere is removed
Solution
(b) In spherical capacitor $C = 4\pi {\varepsilon _0}K\,\left( {\frac{{ab}}{{b – a}}} \right)$ ==> $C \propto K$
Standard 12
Physics
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