Question

СРОЧНО! Даю 35 баллов! Надо найти: R, I, I1, I2, I3, I4,U1, U2, U3, U4.

Answer 1

Ответ:

Объяснение:

$R = R_1 + \dfrac{R_2R_3}{R_2 + R_3} + R_4 = 2 + \dfrac{10*15}{10+15} + 4 = 2 + 6 + 4 = 12 ~Om\\I = \dfrac{U}{R} = \dfrac{60}{12} = 5~A\\I_1 = I_4 = I = 5~A\\U_1 = I_1 * R_1 = 5 * 2 = 10~V\\U_4 = I_4*R_4 = 5 * 4 = 20~V\\U_2 = U_3 = U -U_1 - U_4 = 60-30=30~V\\I_2 = \dfrac{U_2}{R_2} = \dfrac{30}{10} = 3~A\\I_3 = \dfrac{U_3}{R_3} = \dfrac{30}{15} = 2~A$