A ring has radius 30 cm and charge 2nC, the electric potential on the axis of the ring at a distance 40cm from its centre is

A uniformly charged thin ring has radius 10.0 cm and total charge +12.0 nC . An electron is placed on the ring's axis a distance 25.0 cm from the centre of the ring and is constrained to stay on the axis of the ring. The electron is then released from rest, then (i) describe the subsequent motion of the electron (ii) find the speed of the electron when it reaches the centre of the ring.

Electric charge Q is uniformly distributed around a thin ring of radius a. find the potential a point P on the axis of the ring at a distance x from the centre of the ring .

A uniformly charged thin ring has radius 10.0 cm and total charge +12.0muC . An electron is placed on the ring's axis a distance 25.0 cm from the centre of the ring and is constrained to stay on the axis of the ring. The electron is then released from rest. a. describe the subsequent motion of the electron b. find the speed of the electron when it reaches the centre of the ring

Mass of 10 kg is distributed uniformly over a ring of radius 1m. Find the gravitational potential at a point lies on the axis of the ring at a distance of 1m from the centre.

A ring of radius a contains a charge q distributed. uniformly ober its length. Find the electric field at a point. on the axis of the ring at a distance x from the centre.

A point charge q is located at the centre fo a thin ring of radius R with uniformly distributed charge -q , find the magnitude of the electric field strength vectro at the point lying on the axis of the ring at a distance x from its centre, if x gt gt R .

For a uniformly charged ring of radius R, the electric field on its exis has the largest magnitude at a distance h from its centre. Then value of h is :

A ring of radius R has charge -Q distributed uniformly over it. Calculate the charge that should be placed at the center of the ring such that the electric field becomes zero at apoint on the axis of the ring at distant R from the center of the ring.

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 simple harmonic motion along the axis of the ring. State True or False.

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10V . The potential at the distance 3 cm from the centre of the sphere is: