A permanent  magnent  has the  shape  of a sufficiency  thin  disc magnetized along its  axis. The
Channel: Doubtnut
Date: 2020-08-23

A permanent  magnent  has the  shape  of a sufficiency  thin  disc magnetized along its  axis. The radius  of the disc is `R = 1.0 cm`. Evaluate   the magnitude  of a molecular current `I'` flowing  along the rin of the disc, lying  at a distance  `x = 10 cm` from  its centre, is equal to `B = 30 muT`.