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A short bar magnet of magnetic moment 0.4J T–1 is placed in a uniform magnetic field of 0.16 T. Themagnet is in stable equilibrium when the potentialenergy is [2011M]
  • a)
    –0.064 J
  • b)
    zero
  • c)
    –0.082 J
  • d)
    0.064 J
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A short bar magnet of magnetic moment 0.4J T–1 is placed in a un...
For stable equilibrium
U = –MB
= – (0.4) (0.16)
= – 0.064 J
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Most Upvoted Answer
A short bar magnet of magnetic moment 0.4J T–1 is placed in a un...
-1
is placed in a uniform magnetic field of 0.2T. If the magnet is free to rotate, what will be the torque experienced by the magnet?

The torque experienced by the magnet can be calculated using the formula:

τ = m × B × sinθ

where τ is the torque, m is the magnetic moment of the magnet, B is the magnetic field strength, and θ is the angle between the magnetic moment vector and the magnetic field vector.

In this case, the magnetic moment of the magnet is 0.4 J T-1, the magnetic field strength is 0.2 T, and since the magnet is free to rotate, we can assume that the angle between the magnetic moment vector and the magnetic field vector is 90 degrees. Therefore, we can calculate the torque as:

τ = 0.4 J T-1 × 0.2 T × sin 90°
τ = 0.08 J

So, the torque experienced by the magnet is 0.08 J.
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A short bar magnet of magnetic moment 0.4J T–1 is placed in a uniform magnetic field of 0.16 T. Themagnet is in stable equilibrium when the potentialenergy is [2011M]a)–0.064 Jb)zeroc)–0.082 Jd)0.064 JCorrect answer is option 'A'. 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 short bar magnet of magnetic moment 0.4J T–1 is placed in a uniform magnetic field of 0.16 T. Themagnet is in stable equilibrium when the potentialenergy is [2011M]a)–0.064 Jb)zeroc)–0.082 Jd)0.064 JCorrect answer is option 'A'. 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 short bar magnet of magnetic moment 0.4J T–1 is placed in a uniform magnetic field of 0.16 T. Themagnet is in stable equilibrium when the potentialenergy is [2011M]a)–0.064 Jb)zeroc)–0.082 Jd)0.064 JCorrect answer is option 'A'. Can you explain this answer?.
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