alleryWhat is the net magnetic flux through a closed surface around a magnet?
AFour
BZero
CNine
DFive
Answer & Solution
Correct answer: B. Zero
1. Magnetic field lines form continuous closed loops.
2. Every line that enters a closed surface must also leave it.
3. The net magnetic flux is zero for both the surfaces.
4. That is a consequence of there being no magnetic monopoles.
_Source: syllabus Physics Part I, Ch 5 'Magnetism and Matter'_
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