Write Gauss's law for magnetism.

(N/A) Gauss's law for magnetism states that the net magnetic flux through any closed surface is always zero.
Mathematically,it is expressed as: $\oint_{S} \vec{B} \cdot d\vec{A} = 0$
Here,$\vec{B}$ is the magnetic field and $d\vec{A}$ is the area vector of the closed surface $S$.
This law implies that magnetic monopoles do not exist; magnetic field lines always form closed loops,meaning every north pole is accompanied by a south pole.