MCQ
A current carrying coil is placed with its axis perpendicular to $\mathrm{N}-\mathrm{S}$ direction. Let horizontal component of earth's magnetic field be $H$ and magnetic field inside the loop is $H$. If a magnet is suspended inside the loop, it makes angle $\theta$ with $H$. Then $\theta=$
- ✓$\tan ^{-1}\left(\frac{H_0}{H}\right)$
- B$\tan ^{-1}\left(\frac{H}{H_0}\right)$
- C$\operatorname{cosec}^{-1}\left(\frac{H}{H_0}\right)$
- D$\cot ^{-1}\left(\frac{H_0}{H}\right)$
