2 15 A circular coil A has a radius R and current flowing

Last updated: 6/24/2023

2 15 A circular coil A has a radius R and current flowing through it is I Another circular coil B has a radius 2R and if 21 is the current flowing through it then the magnetic fields at the centre of the circular coil are in the ratio i e BA to BB of a 4 1 b 2 1 c 3 1 d 1 1