The magnetic needle of a tangent galvanometer is deflected by an angle 30 ° due to a magnet. The horizontal component of earth's magnetic field is 0.34 × 10 –4 T along the plane of the coil. The intensity of magnetic field of magnet is:
Text Solution
Verified by ExpertsThe correct answer is:
B
Angle through which magnet is deflected 
and horizontal magnetic field 
.
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