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Question 7: NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter

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Question 7: NCERT Solutions for 12th Class Physics: Chapter 5-Magnetism and Matter

A bar magnet of magnetic moment 1.5 J T-1 lies aligned with the direction of a uniform magnetic field of 0.22 T.
(a) What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment:

  • normal to the field direction,
  • opposite to the field direction?

(b) What is the torque on the magnet in cases (i) and (ii)?

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