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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > In figure, infinite conducting rings each having current i in the direction shown are placed concentrically in the same plane as shown in the figure. THe radii of rings are r, 2r, 2r^2, 2^3r, ………………., infinity. The magnetic field at the centre of rings will be

In figure, infinite conducting rings each having current i in the direction shown are placed concentrically in the same plane as shown in the figure. THe radii of rings are r, 2r, 2r^2, 2^3r, ………………., infinity. The magnetic field at the centre of rings will be

................... 2^3r 2r 2r^2 In figure infinite conducting rings each having current i in the direction shown are placed concentrically in the same plane as shown in the figure. THe radii of rings are r infinity. The magnetic field at the centre of rings will be