由换路定则,得 1(0)=i(0)=0 ll1(0+)=uc2(0)=6V uc2(0)=uc2(0)=6V 作0图(0 ) (0 ) 6V (0 ) (0 ) 6V (0 ) (0 ) 0 2 2 1 2 = = = = = = + − + − + − C C C C L L u u u u i i 作0 +图 由换路定则，得