高等教育出版社電路第五版課件第一章分析

1、 s R L R s U 10 BA SE -T w all pl ate t q t q ti t d d lim)( 0 def q W U d d def 已知：已知：4C正電荷由正電荷由a點(diǎn)均勻移動點(diǎn)均勻移動 至至b點(diǎn)電場力做功點(diǎn)電場力做功8J，由，由b點(diǎn)移點(diǎn)移 動到動到c點(diǎn)電場力做功為點(diǎn)電場力做功為12J， 若以若以b點(diǎn)為參考點(diǎn)，求點(diǎn)為參考點(diǎn)，求a、b、c 點(diǎn)的電位和電壓點(diǎn)的電位和電壓U V 2 4 8 q Wab a 0 b V 3 4 12 q W q W bccb c V 202 baab U V 3)3(0 cbbc U V 5 4 128 q Wac a 0 c V 3 4

2、 12 q Wbc b V 235 baab U V 303 cbbc U t w p d d ui t q q w t w p d d d d d d q w u d d t q i d d ）（發(fā)發(fā)出出W221 111 IUP ）（發(fā)發(fā)出出W62)3( 122 IUP （吸收）W1628 133 IUP （吸收）W3) 1()3( 366 IUP ）（發(fā)發(fā)出出W7) 1(7 355 IUP ）（發(fā)發(fā)出出W41)4( 244 IUP d ) t (u ) t ( i L C R l ),(tzu ),(tzi ) tz,u(z ),(tzzi zL 0 zC 0 zR 0 zR 0 zL 0

3、 zC 0 l 0),(iuf GuRui iuR Riu t t t t R uipW 00 dd 0 0ui Gor R 0 0 0ui 0 Gor R S u S u S u R u i S )( 0Ri )0( Ri S u iuP S iuP S S u iuP S V5)510( R u A1 5 5 R u i R W515 2 RiP R W10110 10 iuP SV W515 5 iuP SV 5R R u S i S i S i S Riu )0( 0Ru )( Ru S i S uiP S uiP S i S uiP A2Sii V5u W1052 2 uiP SA

4、W10)2(5 5 iuP SV 12 ii 12 gui 12 uu 12 riu b i c i bc ii Ai2 3 6 1 V iu 4610 65 12 m ti 1b 0)(出入 ii or 1 i 5 i 4 i 3 i 2 i 0 54321 iiiii 54321 iiiii 0 641 iii 0 542 iii 0 653 iii 0 321 iii 5 i 6 i 4 i 1 i 3 i 2 i m tu 1b 0)(升降 uuor Sba UUUU 21 A5)2(3iV1552010u V5 ?u V10 V20 A3 A2 ?i 5 1 4 3 3 A3 543ii V1275u 0)10(1010 1 I A2 1 I A3121 1 II A7310I 024IU V1041442 IU 12 IRU 111 RUII S )1 ( 1 1 R U I S )1 ( 1 2 R UR U S )1 ( 1 2 1 R U IUP S