Potential on the axis of uniformly charged disc of radius `R` at a distance of `sqrt3` R from the centrw is (surface charge density is `sigma`)

A short dipole is placed on the axis of a uniformly charged ring (total charge -Q, radius R) at a distance R/sqrt(2) from centre of ring as shown in figure. Find the Force on the dipole due to that ring

A point charge placed on the axis of a uniformly charged disc experiences a force f due to the disc. If the charge density on the disc sigma is, the electric flux through the disc, due to the point charge will be

A small electric dipole is kept on the axis of a uniformly charged ring at distance R // sqrt(2) from the centre of the ring. The direction of the dipole moment is along the axis. The dipole moment is P, charge of the ring is Q and radius of the ring is R. The force on the dipole is nearly _____

The electrostatic potential of a uniformly charged thin spherical shell of charge Q and radius R at a distance r from the centre

If the potential at the centre of a uniformly charged hollow sphere of radius R is V, then electric field at a distance r from the centre of sphere will be (rgtR) .

Assertion: Electric potential on the surface of a charged sphere of radius R is V. Then electric field at distance r=R/2 from centre is V/(2R) . Charge is distributed uniformly over the volume. Reason: From centre to surface, electric field varies linearly with r. Here r is distance from centre.

A point charge Q is located on the axis of a disc of radius R at a distance b from the plane of the disk. If one - fourth of the electric flux from the charge passes through the disk, then R = sqrt(kb) . Find k.

An electric dipole is kept on the axis of a uniformly charged ring at distance from the centre of the ring. The direction of the dipole moment is along the axis. The dipole moment is p , charge of the ring is Q & radius of the ring is R . The force on the dipole is

A hallow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:

The electric field due to uniformly charged sphere of radius R as a function of the distance from its centre is represented graphically by