PHY · PHY-2024-CT3-029Physics
In a uniform magnetic field of 0.049 T, a magnetic needle performs 20 complete oscillations in 5 seconds as shown. The moment of inertia of the needle is 9.8 × 10⁻⁶ kg m². If the magnitude of magnetic moment of the needle is x × 10⁻⁵ Am², then the value of ‘x’ is; (figure-dependent: oscillating magnetic needle diagram — not transcribable as text)