Question

Помогите с заданием по физике!!!

Answer 1

Ответ:

Объяснение:

№1

$I_1 = \dfrac{V_1}{R_1} = \dfrac{20}{10} = 2~A\\\\I_{\sum} = I_1\\R_{\sum} = \dfrac{V_{12}}{I_{\sum}} = \dfrac{44}{2} = 22~Om\\R_{\sum} = R_1 + R_2 \to R_2 = R_{\sum} - R_1 = 22 - 10 = 12~Om$

№2

$R_{\sum} = R_1 + \dfrac{R_2*R_3}{R_2 + R_3} + R_5 = 1 + \dfrac{3*6}{3 + 6} + 6 = 9~Om\\R_{AB} = \dfrac{R_2*R_3}{R_2 + R_3} = \dfrac{3*6}{3 + 6} = 2~Om\\I_{AB} = 3~A \to U_{AB} = I_{AB} * R_{AB} = 3 * 2 = 6~V\\I_{CD} = 3~A \to U_{CD} = I_{CD} * R_{\sum} = 3 * 9 = 27~V\\I_1 = 3~A \\U_2 = U_{AB} = 6~V \to I_2 = \dfrac{U_2}{R_2} = \dfrac{6}{3} = 2~A$