The radius of the coil of a tangent gavalnometer which has 10 turns is 0.1m. The current (in A) required to produce a deflection of 60o () is
1.1
3
2.1
1.5
As we have learnt,
Tangent law -
When a small magnet is suspended in two uniform magnetic field B and which are at right angles to each other
- wherein
The magnet comes to rest at an angle
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