The net magnetic flux through any closed surface is: (a) Positive (b) Infinity (c) Negative (d) Zero

Answer: (d). Magnetic field lines are closed loops; there are no isolated magnetic poles. Every line entering a closed surface also leaves it, so B· dA = 0 (Gauss's law for magnetism). So the answer is (d) Zero.

The net magnetic flux through any closed surface is: | NEET 2023

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Magnetic Flux & Faraday's Law

The net magnetic flux through any closed surface is:

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Answer: (d)

Magnetic field lines are closed loops; there are no isolated magnetic poles.
Every line entering a closed surface also leaves it, so $\oint \vec{B}\cdot d\vec{A} = 0$ (Gauss's law for magnetism).
So the answer is (d) Zero.

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