The electric field created by a point varies with distance r from the point charge as

The energy density in the electric fieled created by a point change falls off with the distanse from the point charge as

The electric field at a point on the equatorial plane at a distance r from the centre of a dipole having dipole moment vecp is given by (r >> seperation of two charges forming dipole , epsilon_0 = permittivity of free space

Consider an atom with atomic number Z as consisting of a positive point charge at the centre and surrounded by a distribution of negative electricity uniformly distributed within a sphere of radius R. The electric field at a point inside the atom at a distance r from the centre is

A conducting shell of radius R carries charge–Q. A point charge +Q is placed at the centre of shell. The electric field E varies with distance r (from the centre of the shell) as :

A conducting shell of radius R carries charge -Q . A point charge +Q is placed at the centre. The electric field E varies with distance r (from the centre of the shell) as

Show that electric potential at a point P, at a distance .r. from a fixed point charge Q, is given by : V=(1/(4piepsilon_0))Q/r

Electric field intensity (E) due to an electric dipole varies with distance (r ) from the point of the center of dipole as :

The electric field due to a point charge at a distance 6 m from it is 630 N/C. The magnitude of the charge is

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A point charge q is placed at the origin . How does the electric field due to the charge very with distance r from the origin ?