Two point charges q and-q are placed at a distance 2a part. Calculate the electric field at a point P situated at a distance r along the axial line of an electric dipole. What is the electric field when `r>>a`? Also, give the direction of elctric field w.r.t. electric dipole.

Two point charges q and -q is placed at a distance 2a apart.Calculate the electric field at a point P situated at a distance r along the perpendicular bisector of the line joining the charges. What is the electric field when r gtgt a ? Also, give the direction of electric field W.r.t. electric dipole moment? .

Derive an expression for the electric potential at a point along the axial line of an electric dipole.

Two point charges of 2muC but opposte in sign are placed 10 cm apart. Calculate the electric field at a point distant 10 cm from the mid point on the axial line of the dipole.

Obtain an expression for electric field intensity at any point on equitorial line of electric dipole. What is the direction of electric field?

Write a relation between electric field at a point and its distance from a short dipole.