Question

计算如图所示中电压us与电流i

Answer 1

把长方体电路看成一个节点：

i = 6 - 5 = 1 A

U_1.2Ω = 1.5 * 1 + (1.5 - 1 ) * 1.5 = 2.25 V

i_ 1.2Ω = 2.25 / 1.2 = 1.875 A

U_3Ω = （1.5 + 1.875）* 3 = 10.125 V

Us = U_3Ω + U_ 1.2Ω = 10.125 + 2.25 = 12.375 V