A positive point charge, which is free to move, is placed inside a hollow conducting sphere with negative charge, away from its centre. It will

An electric dipole is placed inside a hollow sphere at its centre. Then

A hollow copper sphere is positively charged, the electric field at its centre will be :

There is a cubical cavity inside a conducting sphere of radius R. A positive point charge Q is placed at the centre of the cube and another positive charge q is placed at a distance 1(gtR) from the centre of the sphere. The sphere is earthed Net charge on the outer surface of conducting sphere is

Potential at a point x-distance from the centre inside the conducting sphere of radius R and charged with charge Q is

Potential at a point x-distance from the centre inside the conducting sphere of radius R and charged with charge Q is

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 positive charge is fixed at the origin of coordinates. An electri dipole which is free to move and rotate is placed on the positive x -axis. Its moment is directed away from the origin. The dipole will

Assertion (A): Electric field inside a hollow conducting sphere is zero. Reason (R ): Charge is present on the surface of conductor.