A non-conducting  sphere  of radius  `R = 50 mm` charged uniformly with surface  density  `sigma
Channel: Doubtnut
Date: 16/08/2020

A non-conducting  sphere  of radius  `R = 50 mm` charged uniformly with surface  density  `sigma = 10.0 muC//m^(2)` rotates  with an  angular  velocity  `omega = 70` rad/s about the  asxis passign thorugh  its centre. Find the  magnetic  induction  at the centre  of the sphere.