Which of the following sets contains only properties of a bar magnet mentioned in the notes?
APermanent in nature, like poles repel, freely suspended north pole points north
BTemporary in nature, like poles attract, freely suspended north pole points west
CPermanent in nature, all substances are attracted, pole strength vanishes on cutting
DRequires current, unlike poles repel, points randomly when suspended
Answer & Solution
Correct answer: A. Permanent in nature, like poles repel, freely suspended north pole points north
Option A matches the notes exactly: a bar magnet is permanent, like poles repel, unlike poles attract, and when freely suspended its north pole points north. The other options contain statements not given or directly contradicting the notes.
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