当线圈中的电流为正弦交流时,如 i, =Im sin at, i2=12m sin at u,I=M=OMm cos at =@MIIm sin( at u2=oM2m sin( ot+o) U21=JOMI1=JXMI1 U12=j0M12=H12 (5-6) 作业:P156页(4) P172页5.1 <BACK当线圈中的电流为正弦交流时,如 2 . 2 . 1 2 . 1 . 1 . 2 1 . 1 2 2 2 1 1 1 1 1 2 2 ) 2 sin( ) 2 cos sin( sin , sin U j M I j X I U j M I j X I u MI t MI t MI t dt di u M i I t i I t M M m m m m m = = = = = + = = = + = = 则 (5—6) 作业: P156页 (4) P172页 5.1