Magnetic field lines are always:
ACrossed curves
BCoiled curves
CClosed curves
DBroken curves
Answer & Solution
Correct answer: C. Closed curves
1. Outside the magnet field lines go from north to south.
2. Inside the magnet they run from south to north, completing the path.
3. So the magnetic field lines are closed curves.
_Source: NCERT Class 10 Science, Ch 13 'Magnetic Effects of Electric Current'_
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