User:Van Ladmon
B b t a š
Ampère's circuital law (with Maxwell's addition) ∮ ∂ Σ B ⋅ d ℓ = 1 c ( 4 π ∬ Σ J ⋅ d S + d d t ∬ Σ E ⋅ d S ) {\displaystyle \oint _{\partial \Sigma }\mathbf {B} \cdot \mathrm {d} {\boldsymbol {\ell }}={\frac {1}{c}}\left(4\pi \iint _{\Sigma }\mathbf {J} \cdot \mathrm {d} \mathbf {S} +{\frac {d}{dt}}\iint _{\Sigma }\mathbf {E} \cdot \mathrm {d} \mathbf {S} \right)}