There are two uncharged identicasl metallic spheres 1 and 2 of radius r separated by a distance `d(dgtgtr)`. A charged metalllic sphere of same radius having charge q is touched with one of the sphere. After some time it is moved away fom the system. Now, the uncharged sphere is earthed. Charge on earthed sphere is

There are two uncharged identical metallic spheres of radius a, separated a distance d. A charged metallic sphere (charge q) of sarue radius is brought and touches sphere 1. After some time it is moved away to a far off distance. After this, the sphere 2 is earthed. Find the charge on sphere 2.

There are three unchanged identical metallic spheres 1,2 and 3 each of radius r and are placed at the verticles of an equlilateral triangle of side d .A charged metallic sphere having equal q of same radius r is touched to sphere 1 after some time it is taken to the location of sphere 2 and is touched to it ,then it is taken far away form sphere 1,2,3 after that the sphere 3 is grounded the charge on sphere 3 is (neglect electrostatic induction by assuming d gt gt 2r)

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is

A sphere of 4 cm radius is suspended within a hollow sphere of 6 cm radius. The inner sphere is charged to potential 3 e.s.u. and the outer sphere is earthed. The charge on the inner sphere is

A metallic sphere of radius R having charge Q is connected to an uncharged sphere of radius 3R . The amount of charge flown through connecting wire is

A charged metallic sphere A having charge q_A is brought in contact with an uncharged metallic sphere of same radius and then separated by a distance d . What is the electrostatic force between them

An uncharged metallic solid sphere of radius R is placed at a distance 2R from point charge Q as shown in figure. The electric field intensity due to induced charge at centre of sphere is