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In this video we will talk about the energy of electrical systems at the 1st Spé level. We will start by discussing the intensity of the current, then the voltage and its real source. We will also talk about power and electrical energy and we will finish with the power balance of a converter. ???? Visit us on the site: https://mathrix.fr/ ???? Subscribe: http://tinyurl.com/kx99x2n ???? Instagram @MathrixVideos (stories & lives) ???? Snapchat MathrixVideos (stories) ???? Twitter / mathrixvideos ???? Facebook https://www.fb.me/mathrix.fr