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A bar magnet having a magnetic moment of 2× 104 JT–1 is free to rotate in a horizontal plane.A horizontal magnetic field B = 6 × 10–4 T existsin the space. The work done in taking the magnetslowly from a direction parallel to the field to a direction 60° from the field is           [2009]
  • a)
    12 J
  • b)
    6 J
  • c)
    2 J
  • d)
    0.6 J
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A bar magnet having a magnetic moment of 2× 104 JT–1 is fr...
Work done
= MB (cos θ1 – cos θ2)
= MB (cos 0° – cos 60°)
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A bar magnet having a magnetic moment of 2× 104 JT–1 is free to rotate in a horizontal plane.A horizontal magnetic field B = 6 × 10–4 T existsin the space. The work done in taking the magnetslowly from a direction parallel to the field to adirection 60° from the field is [2009]a)12 Jb)6 Jc)2 Jd)0.6 JCorrect answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A bar magnet having a magnetic moment of 2× 104 JT–1 is free to rotate in a horizontal plane.A horizontal magnetic field B = 6 × 10–4 T existsin the space. The work done in taking the magnetslowly from a direction parallel to the field to adirection 60° from the field is [2009]a)12 Jb)6 Jc)2 Jd)0.6 JCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bar magnet having a magnetic moment of 2× 104 JT–1 is free to rotate in a horizontal plane.A horizontal magnetic field B = 6 × 10–4 T existsin the space. The work done in taking the magnetslowly from a direction parallel to the field to adirection 60° from the field is [2009]a)12 Jb)6 Jc)2 Jd)0.6 JCorrect answer is option 'B'. Can you explain this answer?.
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