A disc rotates with angular velocity `omega` and kinetic energy `E`. Then its angular momentum

A thin disc of radius R and mass M has charge q uniformly distributed on it. It rotates with angular velocity omega . The ratio of magnetic moment and angular momentum for the disc is

The body is rotating with uniform angular velocity ( omega ) having rotational kinetic energy ( E) . Its angular momentum (L ) is :

A rigid body rotates with an angular momentum L. If its kinetic energy is halved, the angular momentum becomes,