Consider a solid sphere of radius r and mass m which has charge q distributed uniformly over its volume. The sphere is rotated abut a diameter with an angular speed `omega`. Show that the magnetic moment `mu` and the angular momentum l of the sphere are related as `mu =(q)/(2m) l.`

Answer

A, B

Explanation

`i=qf={:(qomega),(2pi):}`
`M=pir^(2)i`
`pir^(2)={:(qomega),(2pi):}`
`=(qomegar^(2))/2`