A bar magnet is cut into several small pieces. Which poles does each small piece have?
AOnly a single north pole
BBoth a north and a south pole
COnly a single south pole
DNo poles at all any more
Answer & Solution
Correct answer: B. Both a north and a south pole
1. The magnetism of a bar magnet comes from domains inside it lining up in one direction.
2. Cutting the magnet does not undo that lining up, it only makes smaller magnets.
3. Even if the magnet is cut into tiny pieces, each piece will still have both a north and a south pole.
4. A single pole on its own is never found in nature, unlike a single electric charge.
_Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 15: Magnetism_
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