A metal ball of radius `R = 1.5 cm` has a charge `q = 10 muC`. Find the molecules of the vector fo the resultant force acting on a charge located on one half of the ball.

A spherical shell of radius R = 1.5 cm has a charge q = 20muC uniformly distributed over it. The force exerted by one half over the other half is

A metal sphere of radius 10 cm is given a charge of 12muC . The force acting on unit area of its surface is

A circular metal plate of radius 10 cm is given a charge of 20muC on its surface. The charge density of the plate is

A thin half ring of radius R = 20 cm is uniformly charged with a total charge q = 0.70 nC .Find the magnitude of the electric field strength at the curvaite centre of this half-ring.

A circular metal plate of radius 10 cm is given a charge of 20muC . The outward pull on the plate in the vacuum is

A metallic sphere of radius 18 cm has been given a charge of 5xx10^(-6)C. The energy of the charged conductor is

A half-space filled with uniform istropic dielectrics with permittivity epsilon has the conducting boundary plane. Inside the dielectric at a distance l from this plane, there is a small metal ball possensing a charge q . Find the surface density of the bound chagres at the boundary plane as a function plane as a function of distance r from the ball.

A ball of mass m having a charge q is released from rest in a region where a horizontal electric field E exists. (a) Find the resultant force acting on the ball. (b) Find the trajectory followed by the ball.