A point charge `q` si located at a distance `r` from the centre `O` of an uncharged conducting conducting spherical layer whose inside and outside radii are equal to `R_(1)` and `R_(2)` respectively. Find the potentail at the point `O` if `r lt R_(1)`.

A point charge q is placed at a distance of r from cebtre of an uncharged conducting sphere of rad R(lt r) . The potential at any point on the sphere is

A point charge q is placed at a distance of r from cebtre of an uncharged conducting sphere of rad R(lt r) . The potential at any point on the sphere is

A point charge q is placed at a distance of r from the centre O of an uncharged spherical shell of inner radius R and outer radius 2R. The electric potential at the centre of the shell will be

A point charge q is placed at a distance of r from the centre O of an uncharged spherical shell of inner radius R and outer radius 2R. The electric potential at the centre of the shell will be

A point charge q is located at the centre O of a spherical uncharged coducting layer provided with small orifice. The inside and outside radii of the layer are equal to a and b respectively. The amount of work that has to be performed to slowly transfer the charge q from teh point O through the orifice and into infinity is

A point charge q is located at the centre O of a spherical uncharged coducting layer provided with small orifice. The inside and outside radii of the layer are equal to a and b respectively. The amount of work that has to be performed to slowly transfer the charge q from teh point O through the orifice and into infinity is

A point charge q is placed at a distance of r from the centre O of an uncharged spherical shell of inner radius R and outer radius 2R.The distance r lt R .The electric potential at the centre of the shell will be