Ответ:
Объяснение:
пусть R1=2R; R2=3R; R3=R;R4=2R
R12=R1*R2/(R1+R2)=6R/5
R34=R3*R4/(R3+R4)=2R/3
R_общ=R12+R34=28*R/15
U1=U2=U*R12/R_ общ= U*6*15/(5*28)=U*9/14
U3=U4=U-U1=U*5/14
I1=U1/R1=U/R*9/28
I3=U3/R3=U/R*10/28
I_амп + I1= I3
I_амп = I3 - I1 = U/R*10/28 -U/R*9/28 = U/R*1/28 = 100/10*1/28 = 10/28 A = 5/14 A = 0,357142857 A ~ 0,36 A
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Ответ:
Объяснение:
пусть R1=2R; R2=3R; R3=R;R4=2R
R12=R1*R2/(R1+R2)=6R/5
R34=R3*R4/(R3+R4)=2R/3
R_общ=R12+R34=28*R/15
U1=U2=U*R12/R_ общ= U*6*15/(5*28)=U*9/14
U3=U4=U-U1=U*5/14
I1=U1/R1=U/R*9/28
I3=U3/R3=U/R*10/28
I_амп + I1= I3
I_амп = I3 - I1 = U/R*10/28 -U/R*9/28 = U/R*1/28 = 100/10*1/28 = 10/28 A = 5/14 A = 0,357142857 A ~ 0,36 A