Two isolated metallic solid spheres of radii R and 2R are charged, such that both of these have same charge density. The spheres are located far away from each other and connected by a thin conducting wire. Find the new charge density on the bigger sphere.

The radii of two charged metallic sphers are 5 cm and 10 cm, Each has a charge of 75muC . They are connected by a conducting wire. Calculate amount of charge trnasferred.

A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r form its centre

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?

Two spheres of the same radii, one solid and other hollow are charged to the same potential, which one has greater charge?

The radii of two charged metallic sphers are 5 cm and 10 cm, Each has a charge of 75muC . They are connected by a conducting wire. Calculate common potential of the spheres after connecting.

Two metallic sphers of radii 1 cm and 2 cm are given charges 10^-2C and 5xx10^-2 C respectively. If they are connected by a conducting wire, the final charge on the smaller sphere is

A thin metallic spherical shell of radius R carries a charge Q on its surface. A point charge Q/2 is placed at its centre C and another charge +2Q outside the shell at a distance r from the centre as shown in figure. Find the force on the charge at the centre of shell and at point A.

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.

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

A small sphere of radius r_1 and charge q_1 is enclosed by a spherical shell of radius r_2 and charge q_2 . Show that if q_1 is positive, charge will necessarily flow from the sphere to the shell (when the two are connected by a wire) no matter what the charge q_2 on the shell is.