Question
A non conducting sphere of radius r charged uniformly with surface charge density sigma rotates with angular velocity omega about the axis passing through its centre. Find the magnetic induction at the centre of sphere.
Answers
Look at this ...
https://www.physicsforums.com/threads/magnetic-field-of-rotating-sphere.482886/
https://www.physicsforums.com/threads/magnetic-field-of-rotating-sphere.482886/