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Magnetics question

2019 · 9 Apr · Shift 2 · Q67
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Magnetics question

2019 · 9 Apr · Shift 2 · Q67

JEE MainPhysicsMagneticsMCQ+4 / −1
A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion constant 10–6 N-m/rad. The coil is placed in a maganetic field B parallel to its plane. The coil deflects by 1° for a current of 1 mA. The value of B (in Tesla) is approximately :-
  1. A
    10–4
  2. B
    10–2
  3. C
    10–1
  4. D
    10–3
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