alleryThe magnetic moment of a bar magnet equals that of an equivalent:
ASolenoid
BCapacitor
CResistors
DGenerator
Answer & Solution
Correct answer: A. Solenoid
1. Both produce the same far axial field.
2. Equal fields imply equal moments.
3. So the magnet matches an equivalent solenoid.
4. The answer is solenoid.
_Source: syllabus Physics, Ch 5 'Magnetism and Matter'_
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