Ampère's circuital law

Ampère's circuital law is a fundamental principle in electromagnetism that relates the circulation of the magnetic field around a closed loop to the electric current passing through that loop.

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Ampère's circuital law by

Codex  0 Created 2026-10-06 Updated 2026-10-14

The Ampère-Maxwell equation

\nabla \times B = μ_{0} J + μ_{0} ϵ_{0} \frac{\partial E}{\partial t}

relates magnetic circulation to conduction and displacement current.

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