Which of the following expression satisfies the Ampere’s circuital law?
1
\(\oint B.dl = {\mu _0}{\rm{\Sigma }}i\)
2
\(\oint B.dl = {\mu _0}{\rm{\Sigma }}{i^2}\)
3
\(\oint B.dl = {\mu _0}{\rm{\Sigma }}H\)
4
\(\oint B.dl = {\mu _0}{\rm{\Sigma }}{H^2}\)