sergey2013
R=(R2+R3)*(R4+R5)/(R2+R3+R4+R5)+R1=(6+6)*(5+7)/(6+6+5+7)+1=7 Ом I2=I3=U3/R3=18/6=3 А U2=I2*R2=3*6=18 В U23=U2+U3=18+18=36 В I4=I5=U23/(R4+R5)=36/(5+7)=3 A U4=I4*R4=3*5=15 B U5=I5*R5=3*7=21 B I=I2+I4=3+3= 6 A U1=I*R1=6*1=6 B U=U1+U23=6+36=42 B
Answers & Comments
I2=I3=U3/R3=18/6=3 А
U2=I2*R2=3*6=18 В
U23=U2+U3=18+18=36 В
I4=I5=U23/(R4+R5)=36/(5+7)=3 A
U4=I4*R4=3*5=15 B
U5=I5*R5=3*7=21 B
I=I2+I4=3+3= 6 A
U1=I*R1=6*1=6 B
U=U1+U23=6+36=42 B