alleryA bar magnet can be modelled as a large number of:
AIsolated monopoles
BStationary charges
CElectric field line
DCirculating currents
Answer & Solution
Correct answer: D. Circulating currents
1. Its field lines closely resemble a solenoid's.
2. A solenoid is simply many current loops in a row.
3. So a bar magnet is like many circulating currents.
4. The answer is circulating currents.
_Source: syllabus Physics, Ch 5 'Magnetism and Matter'_
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