Find the value of the electric intensity at a point at a distance of 15 cm in air from a point charge of 450 `muC`.

The electric field intensity at a point at a distance of 1metre from the centre of a charged sphere of radius 25 cm is 10^4 N/C . Find the surface density of charge on the surface of the sphere. The sphere is situated in air .

A long cylinder of radius 2 cm carrying a charge of 5 mu C/m is kept in a medium of dielectric constant 10. Find the electric field intensity at a point situated at a distance 1m from the axis of cylinder.

Derive the expression for electric intensity at a point on the axis of a dipole

Find the length of the tangent segment from a point which is at a distance of 5 cm from the centre of the circle of radius 3cm.

The electric intensity at a point at 10 cm from point charge is 5N//C .The potential atsame point will be

The length of a straight thin wire is 2 m. It is uniformly charged with a positive charge of 3 C. If charge density of the wire is 1.5 x 10-6 C/m then calculate the electric intensity due to the wire at a point 1.5 m away from the centre of the wire.

Calculate the electric field due to a charge of -8.0 xx 10^-8 C at a distance of 5.0 cm from it

Derive an expression for the electric intensity due to an electric dipole at a point on the axis of dipole. When a point charge of 5 xx 10^-9 C is taken from point A to point B, the work done is 10^-6 J. Find the potential difference between points A and points B.

Co-ordinate of a point A is 7. Find Co-ordinates of points at a distance of 7 units from point A.