Ответ:
Объяснение:
R = R1*(R2+R3) / (R1+R2+R3) = 10*(20+30) / (10+20+30) == 8.3 Ом
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Ответ:
Объяснение:
R = R1*(R2+R3) / (R1+R2+R3) = 10*(20+30) / (10+20+30) == 8.3 Ом