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Magnetics question

2020 · 5 Sep · Shift 2 · Q44
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  5. /2020 · 5 Sep · Shift 2 · Q44

Magnetics question

2020 · 5 Sep · Shift 2 · Q44

JEE MainPhysicsMagneticsMCQ+4 / −1
An iron rod of volume 10–3 m3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod will be :
  1. A
    5 ×\times× 102 Am2
  2. B
    0.5 ×\times× 102 Am2
  3. C
    500 ×\times× 102 Am2
  4. D
    50 ×\times× 102 Am2
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