alleryMagnetic field lines of a bar magnet form:
AClosed loops
BOpen curves
CStraight rays
DSingle points
Answer & Solution
Correct answer: A. Closed loops
1. Electric dipole lines begin and end on charges.
2. Magnetic lines have no such starting charge.
3. They form closed loops instead.
4. So the answer is closed loops.
_Source: syllabus Physics, Ch 5 'Magnetism and Matter'_
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