diff --git a/06_cicruits_electriques.md b/06_cicruits_electriques.md
index 2778996403b7a89b183f26a3f5d4c72c761a3b94..5cab7146fe767a8f4c74562e4a95a6d2e64a2cbb 100644
--- a/06_cicruits_electriques.md
+++ b/06_cicruits_electriques.md
@@ -245,9 +245,21 @@ $$
Pour des circuits beaucoup plus compliqués que ceux vus ici, il faut noter qu'il y a un ensemble
-de règles qu'on peut appliquer pour déterminer le courant dans un circuit: les **lois de Kirchoff**.
+de règles qu'on peut appliquer pour déterminer le courant dans un circuit: les **lois de Kirchhoff**. Il s'agit d'un certain nombre de règles très pratiques qui sont des applications des lois de conservation que nous avons déjà vues.
+Le première loi de Kirchhoff est basée sur la loi de conservation de la charge électrique. Elle dit que:
+À une intersection, la somme de tous les courants entrant dans l'intersection, doit être égale à la somme des courants quittant l'intersection.
+
+Pour résumer, tout ce qui entre à une intersection doit en sortir (sinon ça voudrait dire qu'il y a une fuite ou une source quelque part). Par exemple sur la figure @fig:complex_res_current, on voit qu'à l'intersection $a$, on a le courant $I_1$ qui est entrant, et les courant $I_2$ et $I_3$ qu sont sortants. Ainsi on a $I_1=I_2+I_3$.
+
+{#fig:complex_res_current width=50%}
+
+La seconde loi de Kirchhoff, est une application de la conservation de l'énergie. Elle dit que sur n'importe quelle chemin fermé, le changement de potentiel doit être nul.
+
+Ainsi sur la @fig:two_res_kirch, on a deux résistances, $R_1$ et $R_2$, ainsi qu'ûn potentiel $V$. Si on démarre du point $a$, on a un potentiel $V$ qui est inchangé. Puis au point $b$, avant $R_1$, on a toujours le même potentiel. Au point $c$, on a une première chute de potentiel, car $R_1$ est passée par là . Puis en $d$ on atteint un potentiel nul (toute l'énergie a été consommée) après avoir passé $R_2$. Le potentiel en $e$ est toujours nul. Puis on repasse par la batterie, et on revient en $a$ pour fermer la boucle. En $a$ on a avoir à nouveau un potentiel $V$ et ainsi on voit que le changement de potentiel est nul.
+
+{#fig:two_res_kirch width=50%}
## Les circuits contenant des capacités en parallèle ou en série
diff --git a/figs/complex_res_current.svg b/figs/complex_res_current.svg
new file mode 100644
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