Write the expression for the electric field at any point due to a short electric dipole. Give the meaning of the symbols used.

Write the expression for electric field at a point on the axis of a short electric dipole.

Give the expression for electric field intensity due to an infinite thin plane sheet. Give the meaning of the symbols used.

Write the expression for the electric field at a point on the perpendicular bisector due to a short electric dipole. Give the meaning of the symbols used.

Find an expression for electric field at a point on equatorial line of an electric dipole.