Reference Current (Voltage)direction i1 A i2 ↑i3 E1-E2+R2i3-Ri1=0 E1 E2 E2-R3i2-R2i3=0 R3 E1-R,i2-Ri1=0 R1 R2 i1+i3=i2 B 日96Reference Current (Voltage) direction 1 2 0 E  E  R 2 i 3  R1i1  E1 B A i1 i2 i3 E2 R1 R2 R3 2 0 E  R 3 i 2  R 2 i 3  E 1  R 3 i 2  R1i1  0 1 3 2 i  i  i