[tex]Dane:\\I = 300 \ mA = 0,3 \ A\\q = 3 \ C\\Szukane:\\t = ?\\\\I = \frac{q}{t} \ \ /\cdot t\\\\I\cdot t = q \ \ /:I\\\\t = \frac{q}{I}[/tex]
Wyprowadzamy jednostkę
[tex][\frac{C}{A} = \frac{C}{\frac{C}{s}} = s]\\\\t = \frac{3}{0,3} \ s\\\\\boxed{t = 10 \ s}[/tex]
