Derive an expression for intensity of electric field are a point in broadside position or on an equatorial line of an electric dipole.

Obtain an expression for intensity of electric field in end on position, i.e., axial position of an electric dipole.

Answer the following: (a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole. (b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of Q.

Derive an expression for electric field intensity at a point due to point charge.

(i) Derive the expression for electric field at a point on the equatorial line of an electric dipole. (ii) Depiet the orientation of the dipole in (i) stable, (ii) unstable equilibrium in a uniform electric field.

Write an expression (derivation not required) for intensity of electric field in : (1) Axial position. (2) Broad side position of an electric dipole, in terms of its length (2a) dipole moment (p) and distance (r). (ii) What is the ratio of these two intensities i.e., E_(1):E_(2) , for a short electric dipole ?

(a) Draw the equipotential surfaces corresponding to a uniform electric field in the z-direction. (b) Derive an expression for the electric potential at any point along the axial line of an electric dipole

(a) Define electric dipole moment. Is it a scalar or a vector ? Derive the expression for the electric field of a dipole at a point on the equatorial plane of the dipole. (b) Draw the equipotential surfaces due to an electric dipole. Locate the points where the potential due to the dipole is zero.

Electric Field due to Dipole

The SI unit of electric field intensity is

Write an expression of magnetic flux density .B. at a point in end-on position or an axial position of a magnetic dipole. (Derivation not required.)