A point charge `q_(0)` is placed at the centre of uniformly charges ring of total charge Q and radius R. If the point charge is slightly displaced with negligible force along axis of the ring then find out its speed when it reaches a large distance.

Find out energy stored in the electric field of uniformly charged thin spherical shell of total charge Q and radius R.

Find the electric field at the centre of a uniformly charged semicircular ring of radius R. Linear charge density is lamda

The maximum electric field intensity on the axis of a uniformly charged ring of charge q and radius R will be

A point charge q of mass m is located at the centre of a ring having radius R and charge Q. When it is displaced slightly, the point charge accelerates along the x-axis to infinity, the ultimate speed of the point charge :-

A point charge q is located at the centre of a ring having radius R and charge Q .when it is displaced slightly,the point charge accelerated along x -axis to infinity,the ultimate speed of the point charge (consider no loss in radiation)

A thin circular wire of radius r has a charge Q. If a point charge q is placed at the centre of the ring, then find the increase in tension in the wire.

A point charge Q is placed at the centre of a circular wire of radius R having charge q . Find the force of electrostatic interaction between point charge and the wire.

A short dipole is placed on the axis of a uniformly charged ring (total charge -Q, radius R) at a distance R/sqrt(2) from centre of ring as shown in figure. Find the Force on the dipole due to that ring

A ring of radius R has uniformly distributed charge q. A point charge Q is placed at the centre of the ring. (a) Find the increase in tension in the ring after the point charge is placed at its centre. (b) Find the increase in force between the two semicircular parts of the ring after the point charge is placed at the centre. (c) Using the result found in part (b) find the force that the point charge exerts on one half of the ring.

A point charge is projected along the axis of circular ring of charge Q and radius 10sqrt(2)cm . The distance of the point charge from centre of ring, where acceleration of charged particle is maximum, will be