Update cheatsheet.en.md

01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/01.maxwell-equations/02.maxwell-equations-overview/cheatsheet.en.md

@@ -1,7 +1,9 @@
 ---
 text : "The 4 Maxwell's equations"
-published : false
+published : true
 visible : false
 ---
 
-![](Maxwell-equation-en.jpg)
+![](Maxwell-equation-en.jpg)
+
+![](general-scheme-electromagnetism-vacuum-2-L1200.jpg)