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Question: Answered & Verified by Expert
In a permanent magnet at room temperature
PhysicsMagnetic Effects of CurrentKCETKCET 2019
Options:
  • A domains are partially aligned.
  • B magnetic moment of each molecule is zero.
  • C domains are all perfectly aligned.
  • D the individual molecules have non-zero magnetic moment which are all perfectly aligned.
Solution:
2453 Upvotes Verified Answer
The correct answer is: domains are partially aligned.
(A)
Even in the case of a permanent magnet all the domains are not perfectly aligned due to thermal agitations

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