A ring of radius R with a uniformly distributed charge q as shown in figure. A charge `q_(0)`, is now placed at the centre of the ring. Find the increment in-the tension in ring.

A ring of radius R is with a uniformly distributed charge Q on it .A charge q is now placed in the centre of the ring .Find the increment in tension in the 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 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 ring of radius R carries a uniformly distributed charge +Q. A point charge -q is placed on the axis of the ring at a distance 2R from the centre of the ring and released from rest. The particle executes a ismple harmonic motion along the axis of the ring.

Charges q is uniformly distributed over a thin half ring of radius R . The electric field at the centre of the ring is

A positive charge Q is uniformly distrubuted along a circular ring of radius R .a small test chage q is placed at the centre of the ring .The

A non conducting ring of radius R is charged as shown in figure : Figure

A quarter ring of radius R is having uniform charge density lambda . Find the electric field and potential at the centre of the ring.