[" A conducting disc of radius "R" rotates about its axis with an angular velocity "omega." Then the potential "],[" difference between the centre of the disc and its edge is (no magnetic field is present): "]

a conducting disc of radius R roatates about its axis when an angular velocity omega .Then the potential difference between the centre of the disc and its edge is (no magnetic field is present ):

A non-conducting disc having unifrom positive charge Q , is rotating about its axis with unifrom angular velocity omega .The magnetic field at the centre of the disc is.

A non-conducting disc having unifrom positive charge Q , is rotating about its axis with unifrom angular velocity omega .The magnetic field at the centre of the disc is.

A metal disc of radius a rotates with a constant angular velocity omega about its axis. The potential difference between the center and the rim of the disc is ("m = mass of electron, e = charge on electro")

A metal disc of radius a rotates with a constant angular velocity omega about its axis. The potential difference between the center and the rim of the disc is ("m = mass of electron, e = charge on electro")

A metal disc of radius , a =10 cm rotates with a constant angular speed of omega = 200 rad//s about its axis. The potential difference between the centre and the rim of the disc under a uniform magnetic field, B= 5 mT directed perpendicular to the disc, is

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.

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.