A dipole having dipole moment p is placed in front of a solid uncharged conducting sphere as shown in the diagram. The net potential at point A lying on the surface of 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

If a solid and a hollow conducting sphere have same radius then

The net charge given to an isolated conducting solid sphere :

Electric dipole is placed near a uniformly charged large non-conducting surface.

A short dipole of dipole moment P is placed near a point charge Q as shown in figure. Find force on the dipole due to the point charge

A short dipole of dipole moment P is placed near a point charge Q as shown in figure. Find force on the dipole due to the point charge

A short electric dipole of dipole moment P is placed in stable equilibrium in uniform electric field E as shown in the figure. The work done by the external agent to rotate the dipole slowly up to its unstable equilibrium will be

A solid conducting sphere, having a charge Q, is surrounded by an uncharged conducting hollow spherical shell. Let the potential difference between the surface of the solid sphere and that of the outer surface of the hollow shell be V. If the shell is now given a charge of -4 Q, the new potential difference between the same two surfaces