Find the electric field caused by a disc of radius a with a uniform surfce charge density `sigma` (charge per unit area) at a point along the axis of the disc a distance x from its centre.

Find the electric field on the axis of a charged disc.

A sphere of radius R has a charge density sigma . The electric intensity at a point at a distance r from its centre is

Consider a thin spherical shell of radius R consisting of uniform surface charge density sigma . The electric field at a point of distance x from its centre and outside the shell is

Consider a thin spherical shell of radius R consisting of uniform surface charge density sigma . The electric field at a point of distance x from its centre and outside the shell is

A uniformly charged insulating disc of radius 40 cm has charge per unit area 4.0(nC)/m^2 .The electric potential on the axis of the disc at a distance of 30 cm from its centre will be nearly

A dielectric circular disc of radius R carries a uniform surface charge density sigma . If it rotates about its exis with angular velocity omega , the magnetic field at the cente of disc is :

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.