A piece of wire bent in the form of a circular loop A carries a current I. The wire is then bent 

A piece of wire bent in the form of a circular loop A carries a current I. The wire is then bent into a circular loop B of two turns and carries the same current. The ratio of magnetic fields at the centre of loop A to that of loop B will be :
(A) 1/16 (B) 16 (C) 4 (D) 1/4
#cbsephysics
#cbse2024
#physicspaper
#cbsephyzics