Figure shows a uniformly charged hemisphere of radius R. It has a volume charge density `rho`. If the electric field at a point 2R, above the its center is E, then what is the electric field at the point 2R below its center?

The diagram shows a uniformly charged bemisphere of radius R. It has volume charge density rho . If the electric field at a point 2R distance below its centre ?

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

There is a hemisphere of radius R having a uniform volume charge density rho . Find the electric potential and field at the centre

A sphere of charge of radius R has uniform volume charge density. The electric field due to the sphere of charge at a point

An insulated sphere of radius r haas a uniform volume charge density lambda . The electric field at a point A , which is at distance r from its centre is given by (R gt r)

Consider a uniformly charged ring of radius R. Find the point on the axis where the electric field is maximum.

(a) Use Gauss's law to show that due to a uniformly charged spherical shell of radius R, the electric field at any point situated outside the shell at a distance r from its centre is equal to the electric field at the same point, when the entire charge on the shell were concentrated at its centre. Also plot the graph showing the variation of electric field with r, for r le R and r ge R . (b) Two point charges of +1 muC and +4 muC are kept 30 cm apart. How far from the +1muC charge on the line joining the two charges, will the net electric field be zero ?