A sphere of radius 10 cm is chaged with 1 nC (nanocoulamb ) ?Calculate the energy density of the medium at a distance of 20 cm from its centre.

A sphere of radius1 0 cm carries a charge of 1 mu C . Calculate the electric field at a distance of 30 cm from the center of the sphere

A sphere of radius 10 cm carries a charge of 1 mu C . Calculate the electric field at a distance of 5 cm from the center of the sphere

The radius of a circle is 8 cm. Calculate the length of a tangent drawn to this circle from a point at a distance of 10 cm. from its centre.

The radius of a circle is 8 cm. Calculate the length of a tangent drawn to this circle from a point at a distance of 10 cm from its centre?

The radius of a circle is 8 cm. Calculate the length of a tangent drawn to this circle from a point oat a distance of 10 cm from its centre.

A hollow, spherical conductor of radius 10 cm is charged with 5 xx 10^(-9)C . Find the potential (a) at a distance of 20 cm from the centre ,(b) at the surface of the sphere , (c) at a distance of 5 cm from centre.

A spherical conductor of radius 2 cm is uniformly charged with 3 nC. What is the electric field at a distance of 3 cm from the centre of the sphere?

A spherical shell of radius 20 cm has 20 mu C charge placed in vacuum. Calculate the electric field intensity (i) at a distance of 15 cm and (ii) at a distance of 40 cm from the centre of the spherical shell.