Question

Am nevoie de ajutor urgent! uitati-va la poxa. Exercitiul 2.

Answer 1

1-cel sting; 2-cel paralel sus; 3-cel paralel jos; 4-celalalt paralel sus; 5-celalalt paralel jos.

Se da:
R1=R2=R3=R4=R5=R'=4ohm
U=8V
R=?ohm
I1;I2;I3;I4;I5=?A

Formule:
R=R1+R23+R45

R23=R'/2

R45=R'/2

R1=R'

R=R'+R'/2+R'/2
R=2*R'


I1=I23=I45=I

I=U/R

I1=I

D-ce identice, atunci I2=I3 si I2+I3=I
2*I2=I
I2=I/2

I3=I/2

I4=I/2

I5=I/2

Calcule:
R=2*4=8ohm
I1=8/8=1A
I2=1/2=0,5A
I3=1/2=0,5A
I4=1/2=0,5A
I5=1/2=0,5A