Commit c0513437 authored by Claude Meny's avatar Claude Meny

Update cheatsheet.fr.md

parent 8afc524f
Pipeline #16940 canceled with stage
......@@ -344,6 +344,9 @@ $`\Longrightarrow\quad\overrightarrow{dl} \cdot \overrightarrow{B}=0`$
* être une *surface ouverte s'appuyant sur le contour d'Ampère $`\Gamma_A`$*.
* permettre un *calcul simple de $`\displaystyle\oiint_{\mathscr{S}_A} \;\overrightarrow{j^{3D}}\cdot \overrightarrow{dS}`$*.
* Que savons nous ? <br>
La distribution de courant vérifie $`\Longrightarrow`$*$`\;\overrightarrow{j}^{3D}=j^{3D}(\rho)\,\overrightarrow{e_{\varphi}}`$*
<br>
![](magnetostatics-solenoid-ampere-j-surface_v2_L1200.gif)
<br>
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