设300Ω电流i1,600Ω电流i2,方向向下.
300i1+600i2=48
(100+800)i-600i2=-6
i1=i2+i
900i2+300i=48 300i2+100i=16
900i-600i2=-6 -300i2+450i=-3
i=0.0236A
I2=0.0454A
i1=0.069 A
设300Ω电流i1,600Ω电流i2,方向向下.
300i1+600i2=48
(100+800)i-600i2=-6
i1=i2+i
900i2+300i=48 300i2+100i=16
900i-600i2=-6 -300i2+450i=-3
i=0.0236A
I2=0.0454A
i1=0.069 A