Odpowiedź :
[tex]Dane:\\U = 12 \ V\\I = 720 \ mA = 0,72 \ A\\Szukane:\\R = ?\\\\\\R = \frac{U}{I}\\\\R = \frac{12 \ V}{0,72 \ A}\\\\\boxed{R \approx16,7 \ \Omega}[/tex]
[tex]Dane:\\U = 12 \ V\\I = 720 \ mA = 0,72 \ A\\Szukane:\\R = ?\\\\\\R = \frac{U}{I}\\\\R = \frac{12 \ V}{0,72 \ A}\\\\\boxed{R \approx16,7 \ \Omega}[/tex]