A metallic ring of radius a and resistance R is held fixed with its axis along a spatially uniform magnetic field whose magnitude is B0 sin (ωt). Neglect gravity. Then,
(A) the current in the ring oscillates with a frequency of 2ω.
(B) the joule hearting loss in the ring is proportional to a2 ,
(C) the force per unit length on the ring will be proportional to B20 .
(D) the net force on the ring is non-zero
