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Magnetics question

2023 · 25 Jan · Shift 2 · Q63
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  5. /2023 · 25 Jan · Shift 2 · Q63

Magnetics question

2023 · 25 Jan · Shift 2 · Q63

JEE MainPhysicsMagneticsMCQ+4 / −1
For a moving coil galvanometer, the deflection in the coil is 0.05 rad when a current of 10 mA is passes through it. If the torsional constant of suspension wire is 4.0×10−5N m rad−14.0\times10^{-5}\mathrm{N~m~rad^{-1}}4.0×10−5N m rad−1, the magnetic field is 0.01T and the number of turns in the coil is 200, the area of each turn (in cm 2^22) is :
  1. A
    1.5
  2. B
    2.0
  3. C
    0.5
  4. D
    1.0
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