Question

FREE PIZZA- question -two current carrying circular coils of radius r and r/2 are concentric and co-axial the current in the outer coil is I in anticlockwise direction. find the current in inner coil. If the net magnetic field is zero.​

Answer 1

Answer:

if the net magnetic field is zero then the current in inner will also b equal to l but in opposite direction mean clockwise because same magnitude od currennt in different direction will cancel each other and the resultant magnetic field will be zero.