A ring has radius `30cm` and a charge of `2nC` .The electric potential on the axis of the ring at a distance of `40cm` from its centre will be

A uniformly charged insulating disc of radius 40 cm has charge per unit area 4.0(nC)/m^2 .The electric potential on the axis of the disc at a distance of 30 cm from its centre will be nearly

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.

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

An electron released on the axis of a positively charged ring at a large distance from the centre will

A charge Q is uniformly on a ring of radius R . Find the electric potential on the axis of ring at distance x from the centre of the ring. Sketch variation of potential with respect to x .

What is the electric potential at a distance of 9 cm from 3 nC?

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 .

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V . The potential at a distance of 2 cm from the centre of the sphere

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.