For distance far away from centre of dipole the change in magnitude of electric field with change in distance from the centre of dipole is

The electric field intensity |vecE| at a distance 'r' from the centre of the dipole is

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R//2 from the centre?

A sphere of radius R carries charge such that its volume charge density is proportional to the square of the distance from the centre. What is the ratio of the magnitude of the electric field at a distance 2 R from the centre to the magnitude of the electric field at a distance of R//2 from the centre?

How the value of potential due to dipole varies with distance from the centre of the dipole ?

Two equal and opposite charges of magnitude 10 muC each are fixed at a distance of 1 mm from each other to form an electric dipole . Calculate the electric field intensity (i) at a point on its axis at a distance 1 m from the centre of dipole and (ii)at a point on its perpendicular bisector at a distance 1 m from the centre of dipole.

The electric field of an electric dipole at a point on its axis , at a distance d from the centre of the dipole, varies as