A non-conducting ring of radius R has charge Q distributed unevenly over it. If it rotates with an angular velocity `omega` the equivalent current will be:

A conducting ring of radius R has charge Q distributed unevenly over it. If it rotates with an angular velocity omega , the equivalent current will be

A non-conducting ring of radius r has charge q distributed unevenly over it. What will be the equivalent current if it rotates with an angular velocity Omega ?

A non conducting ring of radius R is charged as shown in figure : Figure

A ring of radius 'r' and mass per unit length 'm' rotates with an angular velocity 'omega' in free space then :

A non-conducting thin disc of radius R charged uniformly over one side with surface density s rotates about its axis with an angular velocity omega . Find (a) the magnetic induction at the centre of the disc, (b) the magnetic moment of the disc.

A disc of mass m has a charge Q distributed on its surface. It is rotating about an XX' with a angular velocity omega . The force acting on the disc is

A non-conducting thin disc of radius R charged uniformly over one side with surface density sigma , rotates about its axis with an angular velocity omega . Find (a) the magnetic field induction at the centre of the disc (b) the magnetic moment of the disc.

Consider a nonconducting disc of radius r and mass m which has a total charge q distributed unifromly on it.The ring is rotated about its axis with an angular speed omega .(a) The equivalent electric current in the ring is (qomega)/(Npi) .Then find value of N (b) The magnetic moment of the ring is (4qomegar^(2))/N .Then find value of N .

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.