由图可得: E 13 0.82A RR 6×240 R,+ 10+ r+ r 6+240 R 240 R+r 6+240×0.82=0.8A Ⅰ=11-I2=0.82-0.8=0.02A 7.8 RR R2+ 6+10×240=0.5 R+r 10+240 R 240 2 0.5=0.48A r+r 10+240 l,=0.5-0.48=0.02A由图可得: I I I A I A R R R I A R R R R R E I I I I A I A R R R I A R R R R R E I 0.5 0.48 0.02 0.5 0.48 10 240 240 0.5 10 240 10 240 6 7.8 0.82 0.8 0.02 0.82 0.8 6 240 240 0.82 6 240 6 240 10 13 " 1 " 2 " " 2 1 " 1 1 1 2 " 2 2 2 ' 1 ' ' 1 ' 2 2 ' 2 2 1 1 1 ' = − = − =  = + = + = = +  + = + + = = − = − =  = + = + = = +  + = + + =