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PHY 122 Prelim II (2006) - Pi—Fr 121 PRELIM i1 NAME I?“...

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Unformatted text preview: Pi—Fr' 121 PRELIM i1 NAME: I?“ gfl‘t " Lettuce 3e. meet eemmmfi seamen; 5? I. eeun EACH PIHJBLEM murmur. It you fit) nnl'. understand what it being asked. raise your hand for assistant-e. II. SHI‘JW YDUE WERE. Pruent rater answers as e declmnl number. with appropriate unite. l. The hattcfiee in the circuit sham have zero internal reeitleneee. -II_. II! I 1 —It- LIE? It. Rim] 1" a} Calculate the emf DI" the unkntlwn ban-em. 'E4'3H=';t ills-)4 ”‘3- iii); 2’5“!) 1:} Calculate the CURE-TIL It. in reeieter It. El- 5 = ‘2' :5 4 I; [—H‘ (”Hag—Ext ‘- I H3 3' .5 e} Calculate til: 1'31“: et' 1139mm R. |’]'- :tet'tj— t-C'I'P} rf—hh". ti} Calculate the peteetfial dii‘feteeee between points t: and h in the etreuit-artd state which paint it: at higher potential with respect to the ether. 3 suit)“: It’e‘}: Ire tz potential eittetenttt | 7' V @w when (cheat-ant} 2. The: rusisturs.‘ R. = IUIHJ chm. R: = 11W fihm and R} = mflflflhm an: cuunuatcd as slim-'11. 11 F2313 IIEI If}. '9 n a]: Calculate the :quiiraienl maismncc. ufthis circuit bun-mun. paints a and 1:. 4:3} 5:} W" 15 T“: -I h} A. hail-cry is placed Harms paints a' and i: such than: Iii: current in F415 ILDCI 1%.. Fur this stuntiun. what is Ihc uurrenl in E3? v1: trim): W V um“: Iflaji rims} 11w.- :I [Ian-u) 7 eff—“‘3 I: I Il-I A '- .__-rr” 3. amnion. umsu=1.fii' h IIP'” kgcharge 1.5L: 1: III”: has spam 3.5m Wm: in the +3 dirculiun 31 point A. as shflwn. Thu prquI-I is moving in a uuifunu magnetic fluid and fullm a smiuiruular path, radius 15.5 cm, fit-m p-uint A III puinI C. H.*—‘--_ 3} Th:- dirucfiun ufthu mugnetiu field is V A. intuihe page. J' IE But [3me p351: C. in flit Hi. direcfiim. .i n. in :11; —l'i. diruciiun. :3 c E. in [he +1.? direction. F. in flit—3r direction. 3cm} Em G- 1mm: Infill: about chfliceii. A @C D E F E {timeout} 51 Cal: in! I11: 3 fluflcuflhe magnetic fluid. 1' Int-$811131! B' .r'ruv_ [lu'hlcrwjiiafiHDD ' 5n: _ ‘— ' III ‘E 1'1 {um’flfluu'} / Miliifl-G _ 1 .fl"_—_ '- WEF'ZIIHE FIB: [:II'EHLI T b . #3,, _ “TB 4. A. one tin-up eireuiar eeii nfnree 1131]] m3 carrier: at. eurtent tit" 13.11:) A and lies in the :r-y plane. as sham. The enil it'frer tr- relate ett-eut the v—ettis. A 'Eflflli’lfilll unifurni magnetic field of DAM T paints in the +1 directien. I ail Calculate the magnitude of the tettlue-en the eeil. mia‘i ‘T'; ,er JU- Iii 4-i- {0.33i'Q' i341- ‘. '1' n. rim u}: - ‘I b} The direction ni'the torque {in The nail In A. in the +r. direction. B. in the "1 direction. .. {E} in the +1.r direction. Q E]. in the —3r directim]. E. intn the page. _.-- F. mtl eftite page. 5. Item. A B Q 13 E F G [t'lrt'lentlei —I- —v 5. Ampere-‘5 Law states that the integral at” E - dt amend a elneed truth equals put. Mme I is the tntal current tie-untied by the eta-ted path- Cetttider a wire nfradiut LEI] mm carrying a current uflflfl' A. n. = 4r: x In” Tnt-‘r't. a] Ute Ampete's Law to ealwiate the trtagnimdr nt‘the magnetic field at the surface of the wire. Start with Ampere's Law and SHflW YUUR WDHE. . _'|. _E T": E! JHEJrsz- (WHEEL ee. in At- ._ eE_t1vw?ii‘1ti @. K :th {n.eetfij if __. —t —tn --1- It] The term B. - iii says something sheet the direction nfB relative tn the rinsed pitth. Chums: the best statemenL _’. {3 E is at right angles to the eineed path. _3. B. B paints along the ire-gilt eftlie wire tn the direetier: of the eturrnt l. ‘ —.'l- [3. e in paint-.1 m the eleeetl path. r —;I- :11 B paints Inward H1: eentet Di'tl‘le wire. L- _]. E; B points any from punitive current and inward negative current ' A B [9" D E [eiJ-ele title]: . A circular conducting win: iccp cl'rcsismnc-c L50 dhm and area [L150 tn1 lies in the plan: cf Ihc page- A unifcrm magnetic field whc'cc magnitude is increasing with tint. as Bil) = MW + [LUSH tchia. istiircctcd itttc tit: pagans slim-.11. c} Calculate the value nfthe initial magnetic flint cf Ihc lccp. in: BA = (H.34t'D-flfic3iflij‘ti c151“ @ i1]Calculclethcveluecftheinducedemfcfthelmp. Er; xii: Ea: D.c?5+ gauche 1H: ibfifiégiilnfia: L." Jlij :4": Fry—1*. I; c} Calcuiatc thc valuc cfli‘ic cumnt indcccii in Ihc lccp. t - I r? E cm £- I= 75* '73—'— (3.22.3 mi) d} The current induced in the conducting lccp is a“ .1“ f (a constant and ciccitwicc. 3'" B. ccna-tctttmad ccuutctciccitwisc. it. increasing with time and clcckwise. Ii}. increasing will: tint: and cctmtcrciccitwicc. E. decreasing with time and clockwise. . dcctcccicg with tirnc and ccuctcrcicckwisc. Jkllflifl.‘ III E F Ci {clrclenne} 't'. Twe lettg straight paratlel wires are fitJJJ em apart at; thewn. The upper the carries can-rent]: = 151] A umufthepage and the tewet win: eerriee current I2: lflLU A nut. ef the page. In: tr In re: :1} Calculate the magnitude efthe magnetic field at paint P, Whetmen the wiret- pi = 4:: 1 1e-“1'mm. 9-. M termite] _ : rune-5'1" 4: t '2"?! {Eli} '1' —~ -- flEIJ T: _ fit”. __ fit-”3 51' _- W -1| 4—- ”: ' e’rt‘r we": 5'" “L1 T fiflttt u: -_ te.te'5..tw.m“' : '3_33er_rt‘b T. E F-‘Jj h] The directing elf the magnetic field at paint F‘ is A. inter the page. . eut efthepege. C: 'tn the +Jt dit'eetien. in the —:It directim. E. in the +3 direetien. F. in the —3 directintt. 5. I'm fthe above directions. A E E E F G [tireleenet e] Celeuiete the magnitude of the fnrg Eer unit lenELh en the "23!: EIIE because it is in the n‘tagnet‘ir.r field pde by the current in the lewer wire. 3: “54-3, £21113 8-— f1. at? F .«HDI, F, finl—II {‘mte'fifmjflfl r— I ' em a? ' arr'r {M3 ‘3 _E_,m- J 'Lfiflflg E. EH'JNUS QUEETIDN [5 pnlnu] In “11: circuits below each maismr has the same Hahn: and the balsa-1:5 an: idcal. tank. with emfs. Rank the current 1'11 each Ila-up. [mm mics: IEI trasL \f—JE I"| —1--—l--il- F = max!!— -+-—r ¢B'B‘ A. 4—1—1 FIIIIIE —+ 4 H-Ia +-+-+ T=pr Ha =41: x In"? A ii it I'II'IrIPDflTAN T STUFF *“ * P-Izfl ...
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