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AP EAMCET2005PhysicsMagnetic Properties of Matter

If two identical bar magnets, each of length l , pole strength m and magnetic moment M are placed perpendicular to each other with their unlike poles in contact, the magnetic moment of the combination is

Options

  1. AM 2
  2. Blm ( 2 )
  3. C2 lm ( 2 )
  4. D2 M

Correct answer

B. lm ( 2 )

Step-by-step solution

When magnets are placed perpendicular to each other then, Resultant magnetic moment M^ = M₁^2+M₂^2 Here, M₁=M₂=M So, M^ =M 2 =m l 2 [ M=m l]

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