exam2 - 211 11 211 11 Insruct P.K um a r t or: PHYSIC S DE...

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Unformatted text preview: 211 11 211 11 Insruct P.K um a r t or: PHYSIC S DE PA R T ME N T PHY 2 005 E xa m II Jul 6 ,2 001 y N a m e ( ri ,l t¯rs) p nt as t: Si t e : gna ur O n m y ho nor ,I ha ve ne ihe r gi n nor rece i t ve vedunaut z horiedai don t se xam i i hi naton. YO UR T E ST N UM B E R IS T HE 5DIGIT N UM B E R A T T HE T O P O F E A C H PA GE . DIR E C T IO N S ( ) C o d your t s 1 e e tnum be r o n your gr e e n a ns e r s e t( e 7 6 { f r t 5- i tnum be r ) od your na m e w he us 80 o he d gi .C e on your a ns e r s e t Da r ke n ciclsco m p lt l ( r r o r scan o ccur i t o l ) od your sudntnum be r w he . re eey e f o i .C e ght te on your a ns e r s e t w he . ( ) Pr i 2 ntyour nam e on t ss e ta ndsgn i lo. hi he i ta s ( Do a l cra t w ork anyw he re on t se xa m t tyou l .A tt e ndoft t s,t se xam p ri outi o be t 3) ls ch hi ha i ke he he e t hi nt st urne d i n.N o cre dtw i i l gi n w ihoutbot a ns e r s e ta ndp ri outw ih s t w or k m os ue si lbe ve t h w he nt t cra ch tq tonsdm a nd e . () B l 4 acke n t cicl o fyo ur i e nddans e r co m p lt l he r e nt e w e e y,usng a num be r 2 p e nci i l .Do notm a ke any sray t m ar ksor t a ns e r s e tm ay notre a dp rop e rl he w he y. ( T he a ns e rsa re rounddo®.C ho os t cl e s o e xa ct he re i 5) w e e he os tt .T sno p e na ly f gue si t or sng. >>>>>>>>W HE N YO U FIN ISH < < < < < < < < Handi t gre e n a ns e r s e ts p ar a t l n he w he e e y. 1 e f r t Fi .R e o gure 1 w o l w ie sa re ca rr yi cur re nt I 1 = 3A a ndI 2 = 8A i t dre ctonss n.W hati he .T ong r ng s n he i i how st m agniud oft t a lm a gne tc ¯e l te he ot i datp oi ntQ ,lca t d4m be l w i I2 ? oe ow re ( ) 3 £1 ¡7 T 1 0 ( )2 £1 ¡7 T 2 0 ( 3)1£1 ¡7 T 0 ( )5 £1 ¡8 T 4 0 ( 5)4£1 ¡7 T 0 2 .R e f r t Fi e o gure 1 w o l w ie sa re ca rr yi cur re nt I 1 = 3A a ndI 2 = 3A i t dre ctonss n.W hati he .T ong r ng s n he i i how st m agniud oft t a lm a gne tc ¯e l l- ay i be t e e n t t o w i sa tp oi ? te he ot i dha f w n w he w re ntA ( )12 £1 ¡6 T 1: 0 ( )0 T 2 ( : £1 ¡7 T 3)6 0 0 ( )16 £1 ¡6 T 4: 0 ( : £1 ¡6 T 5)2 2 0 3.R e f r t Fi e o gure 1 w o l w ie sa re ca rr yi cur re nt I 1 = 4 a ndI 2 = 8A i t dre ctonss n.W hati he .T ong r ng s A n he i i how st m agniud oft f ce on a 2 m s cton ofw i 1 te he or ei re ? ( )6 : £1 ¡6 N 140 ( )12 8 £1 ¡5 N 2: 0 ( 18 £1 ¡6 N 3) : 0 ( )48 £1 ¡6 N 4: 0 ( : £1 ¡6 N 5)3 6 0 4 e f r t Fi .R e o gure 1 w o l w i sa r e ca rryi curr e nt I 1 = 8A a ndI 2 = 4 i t dre ctonss n.W he re i he .T ong re ng s A n he i i how st t a lm a gne tc ¯e l e ro? ot i dz ( )2 m be l w i 2 1 ow re ( 5)0. m be l w i 1 55 ow re ( )2 m above w i 1 2 re ( . m above w i 1 3)12 re ( )12 m be l w i 2 4. ow re 5.R e f r t Fi e o gure 1 w o l w i sar e ca rr yi cur re nt I 1 andI 2 i t dre ctonss n.Ist f .T ong re ng s n he i i how he orce be t e e n t w he w i sa tr a ctve or re p uli ? re ti sve ( )re p uli 1 sve ( )a tr actve 2 ti ( 3)x ( )x 4 ( 5)x 211 11 211 11 6 .R e f r t Fi e o gure 2 .T w o l w i sa re p e rp e ndculr t e a ch ot r a ndca rr y e q ua lcurre nt n t dre ctonss n ong re ia o he si he i i how i t ¯gure .( he w i sar e cl e t e a ch ot r,butd nott n he T re os o he o ouch. T he p oi sa re e q ua l l t df ) nt l oca e rom e a ch w i . y re A tw ha tp oi si he m a gniud oft m a gne tc ¯e l a rge s? nt st te he i dl t ( )1a nd3 1 ( )2 and4 2 ( ,, nd4 3)12 3,a ( )1a nd4 4 ( 2 a nd3 5) 7 .A p r ot ( = 16 £1 ¡1 C )m ove st ough a 0. T m a gne tc ¯e l nde xp e rince sa f on q : 09 hr 5 i da e orce of 3: £1 ¡19 N . T he 2 0 ¯e l sor int da t9 0 dgr e e sw ih r e s e ctt t ve l t di e e e t p o he ociy.W hati he s e e doft p rot st p he on? ( )4m / 1 s ( )2 m / 2 s ( 3)3 m / s ( )1m / 4 s ( 5)3. m / 2 s 8.R e f r t Fi e o gure 3.A m a gne ti rop p e dt sd hrough coi lofa re a 4m 2 .A st m a gne ta p p roa che st coi he m a gne tc he he l ,t i ¯e l t ngt i t coi ncr e a s sf dsre h n he li e rom 0. T t 0.0 T i 1s cond ha ti he m agniud of t i uce de m fi 03 o1 n e .W st te he nd n t coi he l ? ( )0.8 V 12 ( )0.6 V 2 2 ( 3)0. V 06 ( )0.0 V 42 ( 5)0.4V 1 9 .C ontnua ton.R e f r t Fi e s4 t 4 .In t p re vi ii e o gur aod he ousp roblm ,w hati he d cton oft i uce dm agne tc ¯e l e st i i re he nd i d a ndcur re nt ? ( )a ss n i ¯g 4 1 how n a ( )a ss n i ¯g 4 2 how n b ( ss n i ¯g 4 3)a how n c ( )a ss n i ¯g 4 4 how n d ( 5)| 1 0.A tansorm e r ha sa p ri a ry coi r f m lconssi of2 0 t itng urnsa nda s condry coi e a lconssi of4 t itng 0 urns he n a 1 0 V .W 2 vola ge s t ource i sconne ct dt t p ri a ry coi ha tvolage w i p p e a r i t s condry coi e o he m l ,w t l la n he e a l ? ( )2 4 V 10 ( )4 V 20 ( 00 V 3)1 ( )2 0 V 4 rm s ( 5)50 V 1 .A m agne ti ul daw ay f 1 sp l e rom a °e xi e m e t lcoi o a st re d t °ux t bl a ls o uce he hrough t coi he l ha tha p p e nst t .W o he a re a oft coi he l ? ( )i ncr e a s s 1 ti e ( )i e cre as s 2 td e ( tsayst s e 3)i t he am () | 4 ( 5)| 1 .A cur re ntca rr yi w i p r od sa m a gne tc ¯e l 2 ng re uce i dof 3 £1 ¡5 T a ta dsa nce of 0. 0 it 04m f rom t w i .W ha ti he he re st curre nti t w i ? n he re ( )6 A 1 ( )8 A 2 ( 3)2 A ( )4A 4 ( 0A 5)1 1 3.A ca p a cior ha sa re a ct t ance of6 0 O hm sa ta f q ue ncy of50 Hz ha ti he r e a ct nce a t500 Hz re .W st a ? ( )6 O hm s 1 ( )1 O hm s 22 ( . O hm s 3)12 ( )6 0 O hm s 4 ( 00 O hm s 5)6 1 .A n i uct ha sa re act nce of1 O hm sa t6 0 Hz hati he re a ct 4 nd or a 0 .W st ance a t1 0 Hz 2 ? ( )2 0 O hm s 1 ( ) 2 00 O hm s 2 ( 3)2 O hm s ( )6 0 O hm s 4 ( 00 O hm s 5)6 211 11 211 11 1 5.A n R L ci ti C rcui sconne ct di s ris he ci tha sa cap a cior val of5 £1 ¡7 F,a n i uct va l of2 H,a nd e n e e .T rcui t ue 0 nd or ue a re ssa nce va l of6 0 O hm s ha ti he re s nce f e q ue ncy oft sci t it ue .W st ona r hi rcui? ( )1 Hz 1 59 ( )1 Hz 2 85 ( 3)36 3 Hz ( )2 0. Hz 4 6 ( e ro 5)z 1 .A n R L ci ti 6 C rcui sconne ct di s ris he ci tha sa cap a cior val of2 £1 ¡5 F,a n i uct va l of5 H,a nd e n e e .T rcui t ue 0 nd or ue a re ssa nce va l of2 0 O hm s it ue .Iti sconne ct dt a 1 V r m s vola ge s ce andi e ra t da tisre s nce f e q ue ncy. eo 0 t our sop e t ona r W ha ti he rm scur re nti t ci t st n he rcui? ( )0. A 15 ( )0. 2 1A ( .A 3)10 ( )5. A 40 ( e ro 5)z 1 .A s r isR L ci thasa cap a cior va l of 2 £ 1 ¡7 F,a n i uct va l of 0. H,anda re ssa nce va l of 7 ee C rcui t ue 0 nd or ue 5 it ue 1 000 O hm s .Iti sconne ct dt a 1 V r m s volage s eo 0 t ource t top e r at sa ta f q ue ncy of 1 ha e re 000 Hz .W ha ti he t al st ot i p e dnce oft ci t m a he rcui? ( )2 550 O hm s 1 ( )1 2 O hm s 2 59 ( 4 O hm s 3)9 2 ( )6 50 O hm s 4 ( 1 3 O hm s 5)1 9 1 8.C ontnua ton.In t p re vi ii he ousp roblm ,w ha ti he vola ge dop a cr os he r e ssor ? e st t r st it ( )3. V 19 ( )8. 2 4V ( .V 3)6 3 ( )1 6 V 4 0. ( 48 V 5)1 . 211 11 211 11 ...
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