Объяснение:
r2345 = R2 + (R3*(R4+R5) / (R4+R5+R3)) = 2 + (3*(5+2) / (3+5+2)) = 4.1 Ом
r678 = R8*(R6+R7) / (R6+R7+R8) = 2*(4+1) / (2+4+1) == 1.4 Ом
r910 = R9+R10 = 3+1 = 4 Ом
Rав = R1 + (r12345*r678*r910 / (r12345*r678 + r678*r910 + r12345*r910))=
=1 + (4.1* 1.4*4 / (4.1*1.4 + 1.4*4 + 4.1*4) = = 1.8 Ома
I = I1 = U/Rав = 18 / 1,8 = 10 А
Объяснение:
r2345 = R2 + (R3*(R4+R5) / (R4+R5+R3)) = 2 + (3*(5+2) / (3+5+2)) = 4.1 Ом
r678 = R8*(R6+R7) / (R6+R7+R8) = 2*(4+1) / (2+4+1) == 1.4 Ом
r910 = R9+R10 = 3+1 = 4 Ом
Rав = R1 + (r12345*r678*r910 / (r12345*r678 + r678*r910 + r12345*r910))=
=1 + (4.1* 1.4*4 / (4.1*1.4 + 1.4*4 + 4.1*4) = = 1.8 Ома
I = I1 = U/Rав = 18 / 1,8 = 10 А