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The dipole moment of a circular loop carrying a current 'I' is 'm' and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1/B2 is
  • a)
    2
  • b)
    √3
  • c)
    √2
  • d)
    1/√2
Correct answer is option 'C'. Can you explain this answer?
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The dipole moment of a circular loop carrying a current I is m and the...
The magnetic dipole moment of a current carrying loop of radius R is m and the magnetic dipole moment of a current carrying loop of radius R' is m' .
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The dipole moment of a circular loop carrying a current I is m and the magnetic field at the centre of the loop is B1. When the dipole moment is doubled by keeping the current constant, the magnetic field at the centre of the loop is B2. The ratio B1/B2isa)2b)√3c)√2d)1/√2Correct answer is option 'C'. Can you explain this answer?
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