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 spherical shell of radius R has a uniformly distributed charge ,then electric field varies as

A solid sphere of radius R has charge q uniformly distributed over its volume. The distance from it surfce at which the electrostatic potential is equal to half of the potential at the centre is

A thin spherical shell radius of R has of charge Q unfromily distributed on it.At the centre of the shell ,a negative point charge -q is placed.IF the shell is cut into two identical hemisphere still equlibrium is maintained .Then find the relation between Q and q ?

A spherical shell of radius R has a charge +q units. The electric field due to the shell at a point

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.

As shown in the figure an electric dipole lies at a distance x from the centrr of a chargerd ring of radius R with charge Q uniformly distributed over it .The net force acting on the dipole is

A plastic disc of radius 'R' has a charge 'q' uniformly distributed over its surface. If the dis is rotated with a frequency 'f' about its axis, then the magnetic induction at the centre of the disc is given by

[" A shell of radius "R" has a "],[" charge "Q" uniformly "],[" distributed over it."A],[" point charge "q" is placed "],[" at the centre of the shell "],[" The work done to "],[" increase the radius of the "],[" shell from "R" to "2R" is "]

Figure (a) shows a shall of radius R having charge q_(1) uniformly distributed over it. A point charge q is placed at the centre of shell. Find amount of work required to increase the radius of shell from R to R_(1) as shown in figure (b).