The diagram shows four arrangements of circular loops, centred at the vertical axis and carrying identical currents 10A in the directions indicated. The radius of smaller loop is 5 mm and larger loop is 10 mm. The separation between $C_{1}$ and $C_{2}$ is 10 mm. Rank arrangements according to the magnitudes of magnetic field at the mid points the loop on the central axes.

1,2,3,4
2,1,3,4
2,4,3,1
2,4,1,3

Question

The diagram shows four arrangements of circular loops, centred at the vertical axis and carrying identical currents 10A in the directions indicated. The radius of smaller loop is 5 mm and larger loop is 10 mm. The separation between $C_{1}$ and $C_{2}$ is 10 mm. Rank arrangements according to the magnitudes of magnetic field at the mid points the loop on the central axes.

1,2,3,4
2,1,3,4
2,4,3,1
2,4,1,3

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