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

Using Gauss's theorem find the filed due to a charged thin spherical shell at a point outside the shell.

Deduce the expression for potential due to a point 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.

Deduce the expression of field of an electric dipole for points on the equatorial plane.

What is the gravitational field at a point inside a spherical shell?

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?