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Question: Answered & Verified by Expert
Two identical thin bar magnets each of length $l$ and pole strength $m$ are placed at right angles to each other with north-pole of one touching south-pole of the other, then the magnetic moment of the system is
PhysicsMagnetic Properties of MatterAP EAMCETAP EAMCET 2022 (08 Jul Shift 1)
Options:
  • A $\mathrm{ml}$
  • B $2 \mathrm{ml}$
  • C $\sqrt{2} \mathrm{ml}$
  • D $\mathrm{ml} / 2$
Solution:
2723 Upvotes Verified Answer
The correct answer is: $\sqrt{2} \mathrm{ml}$
Here, distance between two poles $=\sqrt{2} 1$
Hence, $\mathrm{M}=\mathrm{m} \times \sqrt{2} \mathrm{l}=\sqrt{2} \mathrm{ml}$

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