If magnetic monopoles existed, how would the Gauss's law in magnetism be modified?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → $\oint\limits_S \vec{B} . d \vec{s}=\mu_0 q_m$; where $q_m$ is monopole magnetic charge enclosed by S.
If magnetic monopole existed, the Gauss’s law in magnetism would be modified in the following manner:
$\oint \vec{B} . d \vec{s}=\mu_0\left(q_m\right)$
where qm = monopole magnetic charge enclosed by closed surface S.