更新时间2019-12-08 06:23:22
1、
电压源短路,电流源单独作用,流经R2的电流 i1 = Is/2 = 5A;
电流源开路,电压源单独作用,流经R2的电流 i2 = 10/(1+1) = 5A;
叠加,I = i1 + i2 = 5 + 5 = 10A;U = IR2 = 10 * 1 = 10v 。
2、
R 两端开路电压 Uo = E/2 = 2v;
R 两端等效电阻 r = R1//R2 = 1Ω;
I = Uo/( R + r ) = 2/( 1 + 1 ) = 1A;
U = IR = 1v 。