Apply Gauss's law to derive the expression for electric field intensity due to an infinitely long straight uniformly charges wire. What is the direction of the field intensity if it is positively charged?

Apply Gauss's theorem to calculate electric field due to an infinite plane sheet of charge.

What is the net electric flux through a closed surface surrounding an electric dipole? Derive the expressions for electric field intesity both inside and outside a uniformly charged spherical cell. What is the total enclosed by a closed surface if the electric flux entering and leaving the surface are 20000N/Cm^2 and 30000N/C m^2 respectively.

If one penetrates a uniformly charged sphere the electric field

Derive the expression for field intensity due to an electric dipole in vacuum for points on its axis. Compare the variation of field intensity with distance for an electric dipole and a point charge when both are kept in vacuum.

Deduce the expression of field at P due to a uniformly charged thin spherical shell when the point,P is inside the shell.