Question

4. Calcule a resistencia equivalente nos seguintes circuitos: a) 4 Ω 10 Ω 8 Ω
b) 20 Ω 30 Ω.

por favor alguém me ajuda​

Answer 1

$a) Req = 4+8+10=22$

$b) \frac{1}{Req}=\frac{1}{20}+\frac{1}{30}\\\\\frac{1}{Req}=\frac{3+2}{60}\\\\\frac{1}{Req}=\frac{5}{60}\\\\Req=\frac{60}{5}\\\\Req=12$