如题所述
i1+i2+10=i........(1)
120-116=0.8i1-0.4i2,10=2i1-i2........(2)
120=4i+0.8i1=4i1+4i2+40+0.8i1,80=4.8i1+4i2,100=6i1+5i2........(3)
(3) + (2)x5 150=16i1,i1=9.375A,i2=8.75A,i=28.125A。