A charge Q is deposited uniformly on a thin spherical layer of radius R .How much energy is stored in it.

A charge Q is enclosed by a Gaussian spherical surface of radius R . If the radius is doubled, then the outward electric flux will

A charge q is distributed uniformly on the surface of a sold sphere of radius R. It covered by a concentric hollow conduction sphere of radius 2R . Find the charges inner and outer surface of hollow sphere if it is earthed.

A charge Q is filled in a spherical volume of Radius R . Use the concept of energy density , find energy stored inside the charge volume.

A charge Q is uniformly distributed in a dielectric sphere of radius R (having dielectric constant unity). This dielectric sphere is enclosed by a concentric spherical shell of radius 2R and having uniformly distributed charge 2Q. Which of the following graph correctly represents variation of electric field with distance r from the common centre?

Consider the force F on a charge 'q' due to a uniformlycharged spherical shell of radius R carrying charge Q distributed uniformly over it. Which one of the following statements is true for F, if 'q' is placed at distacen r from the centre of the shell?

Charge q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

A positive charge Q is uniformly distributed along a circular ring of radius R .a small test charge q is placed at the centre of the ring.

A positive charge Q is uniformly distributed along a circular ring of radius R .a small test charge q is placed at the centre of the ring .The

A charge Q is uniformly distributed on a thin spherical shell. What is the field at the centre of the shell? If a point charge is brought close to the shell, will the field at the centre change? Does your answer depend on whether the shell is conducting or nonconducting?

A charge 'q' is placed at the centre of a conducting spherical shell of radius R, which is given a charge Q. An external charge Q' is also present at distance R' (R' gt R) from 'q'. Then the resultant field will be best represented for region r lt R by : [where r is the distance of the point from q]