Ampère's circuital law (source code)

= Ampère's circuital law
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= Ampère-Maxwell equation
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= Ampere-Maxwell law
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= Ampère's law
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The Ampère-Maxwell equation
$$
\nabla\times B=\mu_0J+\mu_0\epsilon_0\frac{\partial E}{\partial t}
$$
relates magnetic circulation to conduction and displacement current.