AIIMS2002PhysicsMagnetic Properties of Matter
The magnetic needle of a tangent galvanometer is deflected at an angle 30^ due to a magnet. The horizontal component of earth's magnetic field 0.34 10⁻⁴ ~T is along the plane of the coil. The magnetic intensity is
Options
- A1.96 10⁻⁴ ~T
- B1.96 10^4 ~T
- C1.96 10⁻⁵ ~T
- D1.96 10^5 ~T .
Correct answer
C. 1.96 10⁻⁵ ~T
Step-by-step solution
Angle through which magnet is deflected ( )=30^ and horizontal magnetic field (B_H )=0.34 10⁻⁴ ~T . Magnetic intensity =B_H =0.34 10⁻⁴ 30^ = (0.34 10⁻⁴ ) 0.577=1.96 10⁻⁵ ~T .