Question

R1=6 Om
R2=8 Om
R3=4 Om
R4=14 Om
R5=12 Om
Uab=120 B
R=?
I=?

Answer 1

$R_{1} = 6$ Ом
$R_{2} = 8$ Ом
$R_{3} = 4$ Ом
$R_{4} = 14$ Ом
$R_{5} = 12$ Ом
$U_{AB} = 120$ B
$R-?$
$I-?$
$R_{2,3} = R_{2} + R_{3} = 8+4=12$ Ом
$R_{1,2,3} = \frac{ R_{1} * R_{2,3} }{ R_{1}+ R_{2,3} } = \frac{6*12}{6+12} = \frac{72}{18} =4$ Ом
$R= R_{1,2,3} + R_{4} +R_{5} =4+14+12=30$ Ом
$I= \frac{U}{R} = \frac{120}{30} = 4$ A