A REALLY GOOD QUESTION ON ELECTROMAGNETIC INDUCTION!!A NON CONDUCTING RING HAVING CHARGE DENSITY q UNIFORMLY OVWER ITS CIRCUMFERENCE IS PLACED ON A ROUGH HORIZONTAL SURFACE. A VERTICAL TIME VARYING MAGNETIC FIELD B= 4 t ^2 IS SWITCHED ON AT t=0 . MASS OF THE RING IS m AND RADIUS r. THE RING ATARTS ROTATING AFTER 2 SECONDS. THE COEFFICIENT OF FRICTION BETWEEN THE RING AND THE TABLE IS..................RATES ASSURED....

Deepak Patra , 10 Years ago

Grade upto college level