A system consists of a thin ring of radius R and a very long uniform wire oriented along axis of the ring with one of its ends coinciding with the centre of the ring. If mass of ring be M and mass of wire be `lambda` per unit length, calculate interaction force between the ring and the wire.

A system consits fo a thin charged wire ring of radius R and a very long uniformly charged thread oriented along the axis of the ring, with one of its ends coinciding with the centre of the ring. The total charge of the ring, with one of the ring so equal to q . The charge of the thread (per unit length) is equal to lambda . Find the interaction froce between the ring and the thread.

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

Consider a ring of mass m and radius r. Maximum gravitational intensity on the axis of the ring has value.

The M.I. of a thin ring of mass M and radius R about an axis through the diameter in its plane will be:

Calculate the moment of inertia of a ring having mass M , radius R and having uniform mass distribution about an axis passing through the centre of the ring and perpendicular to the plane of the ring?

A very long uniformly charged wire oriented along the axis of a circular ring of radius R rests on its centre with one of the ends (as shown in figure). The linear charge density on the wire is lambda . Evalute the flux of the vector vecE across the circle area.

Calculate the moment of inertia of a. a ring of mass M and radius R about an axis coinciding with the diameter of the ring. b. as thin disc about an axis coinciding with the diameter.