A very thin round plate of radius `R` carrying a uniform surface charge density `sigma` is located in vacumm. Find the electric field potentail and strength along the plate's axis as a function of a distance `l` from its centre. Investigation the obtained expression of `l rarr 0` and `l gt gt R`.

Find the electric field potentail and strength at the centre of a hemisphere fo raidus R ahcged uniformly with the the surface density sigma .

Find the electric field potentail and strength at the centre of a hemisphere fo raidus R ahcged uniformly with the the surface density sigma .

A uniformly charged disc of radius R having surface charge density sigma is placed in the xy plane with its center at the origin. Find the electric field intensity along the z-axis at a distance Z from origin :

Find the electric field potential and strength at the center of a hemisphere of radius R charged uniformly with the the surface density sigma .

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 long thin flat sheet has a uniform surface charge density sigma . The magnitude of the electric field at a distance .r. from it is given by

A thin straight rod of length 2a carrying a uniformly distributed charge q is located in vacumm. Find the magnitude of the electric field strength as a function of the distatance r from the rod's centre along the streaight line (a) perpendicular to the rod and passing through its centre , (b) coinciding with the rod's direction (at the point lying outside the rod).