A ball of charge q is plaed in a hollow conductive uncharged sphere. After this, the sphere is connected with earth for a short time and the ball is then removed from the sphere. The ball has not been brought into contact with the sphere. What charge will the sphere have after these operations? Where and how will this charge the distributed?

A ball of charge q is plaed in a hollow conductive uncharged sphere. After this, the sphere is connected with earth for a short time and the ball is then removed from the sphere. The ball has not been brought into contact with the sphere. What will be the nature of the field and how wil it be located?

Two charged conducting spheres A and B having radii a and b connected to each other by a copper wire. Find the ratio of the electric fields at the surfaces of the two spheres.

Two identical conducting spheres M and N has charge q_M and q_N respectively. A third identical neutral spehre P is brought in contact with M and then separated. Now, sphere P is brought in contact with N and then separated. Find out final charge on the spehre P.

Two metal spheres, one of radius R and the other of radius 2R, both have the same surface charge density s. They are brought in contact and separated. What will be new surface charge densities on them?

A point positive charge is brought near an isolated conducting sphere. The electric field is best given by.

Two charged conducting spheres of radii a and b are connected to each other by a wire. What is the ratio of electric fields at the surfaces of the two spheres? Use the result obtained to explain why charge density on the sharp and pointed ends of a conductor is higher than on its flatter portions.

Fill ups A point charge is placed at the centre of a hollow conducting sphere of internal radius 'r' and outer radius '2r'. The ratio of the surface charge density of the inner surface to that the outer surface will be…………….. .

A small sphere of radius a carrying a positive charge q, is placed concentrically inside a larger hollowconducting sheli of radius b (bgt a). This outer shell has charge Q on it. Show that if these spheres are connected by a conducting wire, charge will always flow from the inner sphere to the outer sphuisirrespective of the magnitude of the two charges.

The sphere A and B have identical sizes. A third sphere of the same size but uncharged is brought in contact with the first, then brought in contact with the second and finally removed from both. What is the new force of repulsion between A and B?

A small charged metal sphere is situated in an earthed metal box. Illustrates the electric field between the sphere and the metal box. The radius r of the sphere is 2.4 cm. The magnitude of the charge q on the sphere is 0.76 n C.