Question

Questão 03. Dado o circuito da figura a seguir, A intensidade de corrente que atravessa a fonte vale

a)5 A

b)15 A

c)20 A

d)25 A

Answer 1

$\boxed{\begin{array}{l}\sf R_{eq}=\dfrac{R_1\cdot R_2}{R_1+R_2}\\\\\sf R_{eq}=\dfrac{5\cdot20}{5+20}=\dfrac{100}{25}=4~\Omega\\\sf I=\dfrac{U}{R}\\\\\sf i=\dfrac{100}{4}\\\\\sf i=25~A\\\huge\boxed{\boxed{\boxed{\boxed{\sf\maltese~alternativa~d}}}} \end{array}}$