§10-3含源电路的欧姆定律 6=E40 R -。d-ga=R) .j=o(E+E) xU-[Rd=[Ld-[ R1 R2 a b I  =  b a ab U E dl   dl b j a   =     = b a dl S I ( ) R1 R2 = I + ( ) E Ek j     = +   =  b a ab U E dl     =  −  b a k b a dl E dl j      §10-3 含源电路的欧姆定律 1  2  1 r 2 r − − R1 R2 a c b I