nursing AIIMS BSc Nursing 2025 Mock Test Series Physics Moving Charges and Magnetism Magnetic Field on the Axis of a Circular Current Loop
The ratio of the number of turns and the radius of two coils is 1 : 3 and 3 : 1 respectively. If the same current is flowing in both the coils, then find the ratio of the magnetic field at the center of the coils.
1
1 : 1
2
1 : 3
3
1 : 9
4
1 : 27