Question

Calcular a resistência (em Ohms) equivalente entre os pontos A e B do circuito a seguir:



( ) 10,09



( ) 1,09



( ) 10



( ) 11



( ) 11,09

Answer 1

$\frac{1}{R'} = \frac{1}{4} + \frac{1}{6} + \frac{1}{2}\\\\\frac{1}{R'} = \frac{3}{12} + \frac{2}{12} + \frac{6}{12}\\\\\frac{1}{R'} = \frac{11}{12}\\11R' = 12\\R' = \frac{12}{11} \Omega$

R = 2 + 8 + R'

R = 2 + 8 + 12/11

11R = 22  + 88  + 12

R = 122 / 11

R = 11,09Ω