question_answer

Consider a hypothetic spherical body. The body is cut into two parts about the diameter. One of hemispherical portion has mass distribution m whie the other portion has identical charge distribution q. The body is rotated about the axis       with constant speed o. Then, the ratio of magnetic moment to angular momentum is  

A) \[\frac{q}{2m}\]

B) \[>\frac{q}{2m}\]

C) \[<\frac{q}{2m}\]         

D) cannot be calculated