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AP EAMCET202522 May 2025Evening ShiftPhysicsMagnetic Effects of CurrentActual

A short bar magnet of magnetic moment 10^4 ~J ~T ⁻¹ is free to rotate in a horizontal plane. The work done in rotating the magnet slowly from the direction parallel to a horizontal magnetic field of 4 10⁻⁵ ~T to a direction 60^ to the direction of the field is

Options

  1. A0.2 J
  2. B2.6 J
  3. C0.4 J
  4. D6.2 J

Correct answer

A. 0.2 J

Step-by-step solution

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