[tex]Dane:\\R = 2,8 \ \Omega\\I = 4 \ A\\Szukane:\\U = ?\\\\Rozwiazanie\\\\Z \ prawa \ Ohma\\\\R = \frac{U}{I} \ \ \ |\cdot I\\\\U = R\cdot I\\\\Podstawiamy \ wartosci \ liczbowe\\\\U = 2,8 \ \Omega\cdot4 \ A = 2,8 \ \frac{V}{A}\cdot 4 \ A\\\\\boxed{U = 11,2 \ V}[/tex]
Odp. Przyłożono napięcie U = 11,2 V.
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[tex]Dane:\\R = 2,8 \ \Omega\\I = 4 \ A\\Szukane:\\U = ?\\\\Rozwiazanie\\\\Z \ prawa \ Ohma\\\\R = \frac{U}{I} \ \ \ |\cdot I\\\\U = R\cdot I\\\\Podstawiamy \ wartosci \ liczbowe\\\\U = 2,8 \ \Omega\cdot4 \ A = 2,8 \ \frac{V}{A}\cdot 4 \ A\\\\\boxed{U = 11,2 \ V}[/tex]
Odp. Przyłożono napięcie U = 11,2 V.