Gujarati
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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