Question

помогите
пж
надо
очень​

Answer 1

Ответ:

1) R = R1+R2+R3

2) R = R1R2/(R1+R2)

3) R = R1/3

4) R = (R1/2) + R3  

5) R = 1/(1/R1 + 1/R2 + 1/R3)

6) R = R1/2 + R3/2

7) R = R1 +R2

   I = U/R

8) R = R1+R2+R3

   I = U/R

Объяснение: