capacity of an isolated sphere is increased n times when it is enclosed by an earthed concentric shell,the ratio of radii of shell to the sphere is

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Q. Capacity of an isolated sphere is increased

n

times when it is enclosed by an earthed concentric sphere. The ratio of their radii is

Q. The capacitance (C) for an isolated conducting sphere of radius (a) is given by

4 π ϵ_{o} a

. If the sphere is enclosed with an earthed concentric sphere. The ratio of the radii of the spheres being

\frac{n}{n - 1}

then the capacitance of such a sphere will be increased by a factor.

Q. The capacity of an isolated sphere of radius

9 c m

C

. When it is connected to an earthed concentric thin hollow sphere of radius

R

, the capacity becomes

10 C

. Then the value of

R

Q. Figure shows a solid conducting sphere of radius

1 m,

enclosed by a metallic shell of radius

3 m

such that their centres coincide. If outer shell is given a charge of

6 μ C

and inner sphere is earthed, find magnitude charge on the surface of inner shell

A solid conducting sphere of radius $10 c m$ is enclosed by a thin metallic shell of radius $20 c m$ . A charge $q = 20 μ C$ is given to the inner sphere. Find the heat generated in the process when the inner sphere is connected to the shell by a conducting wire :

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