A circular coil of mass m, radius R and N turns carries current I. Plane of the coil is perpendicular to the magnetic meridian. The coil is suspended by a thread of negligible torsion at a place where angle of dip is 37∘ and earth's magnetic field is B. If the coil is rotated by a small angle with thread as the axis and released, it starts oscillating. Time period of such oscillations is

A circular coil of mass m, radius R and N turns carries current I. Pl

1.	A circular coil of mass m, radius R and N turns carries current I. Plane of the coil is perpendicular to the magnetic meridian. The coil is suspended by a thread of negligible torsion at a place where angle of dip is 37∘ and earth's magnetic field is B. If the coil is rotated by a small angle with thread as the axis and released, it starts oscillating. Time period of such oscillations is
Answer» A circular coil of mass $m$ , radius $R$ and $N$ turns carries current $I$ . Plane of the coil is perpendicular to the magnetic meridian. The coil is suspended by a thread of negligible torsion at a place where angle of dip is $37^{\circ}$ and earth's magnetic field is $B$ . If the coil is rotated by a small angle with thread as the axis and released, it starts oscillating. Time period of such oscillations is

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