电容联结 电容串联 C C U=U,+U,+…+U =1 i=1 C电容联结 1 2 1 n n i i U U U U U = = + + + =  1 n i i q q C U U = = =  1 1 1 n i n i i i U U U C q q q = = = = =   1 1 1 n i C C = i =  电容串联