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Magnetics question

2019 · 10 Apr · Shift 2 · Q56
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Magnetics question

2019 · 10 Apr · Shift 2 · Q56

JEE MainPhysicsMagneticsMCQ+4 / −1
A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. if this square loop is changed to a circular loop and it carries the same current, the magnitude of the magnetic dipole moment of circular loop will be:
  1. A
    mπ{m \over \pi }πm​
  2. B
    3mπ{{3m} \over \pi }π3m​
  3. C
    2mπ{{2m} \over \pi }π2m​
  4. D
    4mπ{{4m} \over \pi }π4m​
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