A charge 'q' is uniformly distributed over the volume of a uniform ball of mass m and radius R which rotates with an angular velocity `omega` about an axis passing through its centre (proper axis).If the magnetic moment of the ball is `(qR^(2)w)/(x)`,then find x

A charge q is uniformly distributed on a non-conducting disc of radius R . It is rotated with an angular speed co about an axis passing through the centre of mass of the disc and perpendicular to its plane. Find the magnetic moment of the disc.

A disc of mass m, radius r and carrying charge q, is rotating with angular speed omega about an axis passing through its centre and perpendicular to its plane. Calculate its magnetic moment

A disc of mass m, radius r and carrying charge q, is rotating with angular speed omega about an axis passing through its centre and perpendicular to its plane. Calculate its magnetic moment

A charge q is spread uniformly over an insulated loop of radius r. If it is rotated with an angular velocity omega with respect to normal axis then the magnetic moment of the loop is :

A copper ball of mass m = 1 kg with a radius of r = 10 cm rotates with angular velocity omega = 2 rad//s about an axis passing through its centre. The work should be performed to increase the angular velocity of rotation of the ball two fold is.

A charge Q is uniformly distributed over a ring which is rotating with constant angular velocity omega about an axis passing through its centre and perpendicular to the plane. A wire which carries a current I is lying perpendicular to the plane of the irng along its axis having one end at its centre. Find resultant magnetic force on the wire by the ring.

A uniform rod of mass m and length l rotates in a horizontal plane with an angular velocity omega about a vertical axis passing through one end. The tension in the rod at a distance x from the axis is

A ring of mass m and radius r rotates about an axis passing through its centre and perpendicular to its plane with angular velocity omega . Its kinetic energy is

A charge Q is uniformly distributed over the surface of non - conducting disc of radius R . The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular to its plane and passing through its centre of the disc. If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc then the variation of the magnetic induction at the centre of the disc will br represented by the figure:

A conducting ring of radius r having charge q is rotating with angular velocity omega about its axes. Find the magnetic field at the centre of the ring.