Physics - Magnetism Question with Solution | TestHub

A superconducting current carrying ring of mass $\mathrm{m}=40\mathrm{gm}$ and $\mathrm{R}=2\mathrm{cm}$ floats in the magnetic field of a magnet. If the field lines make an angle $\theta =30^{\circ }$ with vertical and the ring is placed co-axially, assuming $\mathrm{i}=$ 10 A , find the magnetic field $\overrightarrow{\mathrm{B}}$. if answer is $\frac{\mathrm{n}}{3\pi }$. Write the value of n .