Calculate electric field at a point on axis, which at a distance x from centre of uniformly charged disc having surface charge density `sigma` and R which also contains a concentric hole of radius r.

Derive the expression of electric field intensity at a point 'P' which is situated at a distance x on the axis of uniformly charges disc of radius R and surface charge density sigma . Also, derive results for (i) x gt gt R (ii) x lt lt R

Electric field at a point of distance r from a uniformly charged wire of infinite length having linear charge density lambda is directly proportional to

Electric field at a point of distance r from a uniformly charged wire of infinite length having linear charge density lambda is directly proportional to

Electric field at the centre of uniformly charge hemispherical shell of surface charge density sigma is (sigma)/(n epsi_(0)) then find the value of n .

The magnitude of the electric field on the surface of a sphere of a sphere of radius r having a unifrom surface charge density sigma is

Calculate the magnetic field at distance y from the centre of the axis of a disc of radius r and unifrom surface charge density sigma , If the disc spins with angular velocity omega ?

Calculate the magnetic field at distance y from the centre of the axis of a disc of radius r and unifrom surface charge density sigma , If the disc spins with angular velocity omega ?