alleryStart learning →All magnetic effects are explained using currents rather than poles because monopoles are:
AToo heavy to move
BFound only in iron
CToo small to measure
DNot observed in nature
Answer & Solution
Correct answer: D. Not observed in nature
1. The explanation of magnetism rests on what actually exists.
2. Isolated north and south magnetic poles are called magnetic monopoles.
3. Since magnetic monopoles are not observed, poles cannot be the basic entity.
4. Currents are used to explain all magnetic effects instead.
5. Even the domains in a ferromagnet come back to moving charge.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 22 'Magnetism', sections 22.1-22.11_
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