Capacity of an isolated spherical shell is becomes 5 times when it is enclosed by an earthed concentric shell The ratio of their radii (bigger to small) is

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

In side a hollow isolated spherical shell-

A metallic spherical shell of radius r_1 is surrounded by another concentric metallic spherical shell of radius r_2 . The space between the two shells is filled with a dielectric of dielectric constant K. If a charge Q is given to the inner shell, the charge appearing on the outer surface of the outer shell is

We have an isolated conducting spherical shell of radius 10 cm . Some positive charge is given to it so that the resulting electric field has a maximum intensity of 1.8 xx 10^6 NC^-1 . The same amount of negative charge is given to another isolated conducting spherical shell of radius 20 cm . Now, the first shell is placed inside the second so that both are concentric as shown in (Fig. 3.154). . The electric potential at any point inside the first shell is.

We have an isolated conducting spherical shell of radius 10 cm . Some positive charge is given to it so that the resulting electric field has a maximum intensity of 1.8 xx 10^6 NC^-1 . The same amount of negative charge is given to another isolated conducting spherical shell of radius 20 cm . Now, the first shell is placed inside the second so that both are concentric as shown in (Fig. 3.154). . The electric field intensity just inside the outer sphere.

We have an isolated conducting spherical shell of radius 10 cm . Some positive charge is given to it so that the resulting electric field has a maximum intensity of 1.8 xx 10^6 NC^-1 . The same amount of negative charge is given to another isolated conducting spherical shell of radius 20 cm . Now, the first shell is placed inside the second so that both are concentric as shown in (Fig. 3.154). . The electrostatic energy stored in the system is.

We have an isolated conducting spherical shell of radius 10 cm . Some positive charge is given to it so that the resulting electric field has a maximum intensity of 1.8 xx 10^6 NC^-1 . The same amount of negative charge is given to another isolated conducting spherical shell of radius 20 cm . Now, the first shell is placed inside the second so that both are concentric as shown in (Fig. 3.154). . If both the spheres are connected by a conducting wire, then.

Three concentric conducting shells of radii a, b and c are shown in (Fig. 3.100). Charge on the shell of radius b is Q. If the key K is closed, find the charges on the innermost and outermost shells and the radio of charge densities of the shells. Given that a : b : c = 1 : 2 : 3 .

Three concentric conducting spherical shells carry charges as : +4Q on the inner shell, -2Q on the middle shell and -5Q on the outer shell. The charge on the inner surface of the outer shell is

The capacitance of two concentric spherical shells of radii R_(1) and R_(2) (R_(2) gt R_(1)) is