R экв=22 Ом
Объяснение:
R₄₅=R₄*R₅/(R₄+R₅)=10*15/(10+15)=150/25=6 Ом
R₄₅₆₇=R₄₅+R₆+R₇=6+12+6=24 Ом
R₃₄₅₆₇=R₃*R₄₅₆₇/(R₃+R₄₅₆₇)=72*24/(72+24)=18 Ом
R₁₃₄₅₆₇=R₁+R₃₄₅₆₇=18+18=36 Ом
R₁₂₃₄₅₆₇=R₂*R₁₃₄₅₆₇/(R₂+R₁₃₄₅₆₇)=36*36/(36+36)=18 Ом
R экв=R₈+R₁₂₃₄₅₆₇=4+18=22 Ом
R экв=22 Ом
Объяснение:
R₄₅=R₄*R₅/(R₄+R₅)=10*15/(10+15)=150/25=6 Ом
R₄₅₆₇=R₄₅+R₆+R₇=6+12+6=24 Ом
R₃₄₅₆₇=R₃*R₄₅₆₇/(R₃+R₄₅₆₇)=72*24/(72+24)=18 Ом
R₁₃₄₅₆₇=R₁+R₃₄₅₆₇=18+18=36 Ом
R₁₂₃₄₅₆₇=R₂*R₁₃₄₅₆₇/(R₂+R₁₃₄₅₆₇)=36*36/(36+36)=18 Ом
R экв=R₈+R₁₂₃₄₅₆₇=4+18=22 Ом