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In classical electromagnetism, Ampère's circuital law (not to be confused with Ampère's force law) [1] relates the circulation of a magnetic field around a closed loop to the electric current passing through the loop. James Clerk Maxwell derived it using hydrodynamics in his 1861 published paper "On Physical Lines of Force". [2]
Ampère's circuital law, in physics, relates the circulating magnetic field in a closed loop to the electric current through the loop. Discovered by André-Marie Ampère . Anderson's rule is used for the construction of energy band diagrams of the heterojunction between two semiconductor materials.
A current through any conductor creates a circular magnetic field around the conductor due to Ampere's law. [3] The advantage of using the coil shape is that it increases the strength of the magnetic field produced by a given current.
Maxwell added displacement current to the electric current term in Ampère's circuital law. In his 1865 paper A Dynamical Theory of the Electromagnetic Field Maxwell used this amended version of Ampère's circuital law to derive the electromagnetic wave equation. This derivation is now generally accepted as a historical landmark in physics by ...
Magnetic field (green) induced by a current-carrying wire winding (red) in a magnetic circuit consisting of an iron core C forming a closed loop with two air gaps G in it. In an analogy to an electric circuit, the winding acts analogously to an electric battery, providing the magnetizing field , the core pieces act like wires, and the gaps G act like resistors.
Thus, a depiction of the field around a loop of flux (as would be produced in a toroidal inductor) is qualitatively the same as the field around a loop of current. The figure to the right is an artist's depiction of the field. The thicker lines indicate paths of higher average intensity (shorter paths have higher intensity so that the path ...
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Classical electromagnetism or classical electrodynamics is a branch of physics that studies the interactions between electric charges and currents using an extension of the classical Newtonian model.