RealExam2Sol0 - Principles of Phyeics II PHYS Ell-lot] Exam...

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Unformatted text preview: Principles of Phyeics II PHYS Ell-lot] Exam #2 Sections 3, 4 Fall 21111 Name .113: Hi I in t. You may use the values k = 3.95am? N meet, cu = 8.35xifl'12C24’Nm2 , and e = Loom-'9 c. l. {5 points} A reeiator is attached to a hatter},r as shown. What is the current in the resistor? mflfl 3’1. H : I'x _ I‘ .r E 3“ LI] - a f if} {— H i ._ __ , _ _ ' aoov If I; . I. 9; . a #1. 2. (5 points} A charge of—3.24pC is at the point (x, y] = (1mm, lflflm) . What is the electric potential at the point (x, 3') = (-2flflm, 4.0%) ‘2’ 'e. -- .. - -I=- '~ . 3. {5 points} A capacitor is being charged by a constant current of 6.45m . How much has the charged increaeed after a time of 3.30min ? -.: 1 t. (Ix I I" Iiii-Ami L . .- - "‘---1.‘ L" I 4. [15 points] A coaxial capacitor has an inner radius cf 125111111 , an cutcr radius cf 3.fl0mm , and a length [If 0.?Sflcm . How much charge is an the pcsitivc ccnductor ifit is charged to 11$! '? P'ék 1. L“ (ix; 4:14.} 1"- ; _ 'H'T £111 - $135115". L .- Hut" ‘ 1 rail-7:.) 1.11:1. 1'1 . 1-1-2- .'.' ‘f (:1: ‘H It 1- . __ L1 - x .r “i 'w'.i’jl.-{':'€ }-~1‘«-3‘-' -_x 5-— I _ 1-. 1- _ dd. '. I] [.1 . 9.3. H t- 5. (15 mints] Consider the circuit shown. Dctcmfinc the current in each resistor. lfiflfl EDGE! 1|“! “TE-L ~ Lids-{u ‘- E. iv”, fi.‘_ , J Li in I .L—"' _ '_'I "‘ ‘ JH‘ 1 tuf- .11.. I.“ _t : Turf 1F - J.— 42.11111 '1 If; -' i.:t' 11' LA: Elf-(Ema; xr i..- l ‘ Lr'L'r'fi-L — I 7:42 1: ;_ . _ _ til-7‘ '1 _ -1 1 l-E-"P' Aim—- u—f - (Lac t I u car-.1011 .11” + it w»- 1:- u- 1 F x 1 . ,‘ aim-'1 t 4hr”! .h'iid _-L£.{' “(I 4 ‘I - Alfitf I * I r "2’ cit/t .' w. I '2! A b_+ J I x I:- . V .3 £511.: (“if c 4.... :1- II'* {I 1“}. II I. _ L er'" _ {LL pclnt (x, y} — {scum ,sccm} ? s. IEIIII| points} "three charges farm the ccrners cf an equilateral triangle cf sicie 159cm . The charges are +4.t}fltLC , -4.UDJJ.C , and 4-1.th . What is the electric pctential energy f L cf this configuration? L. we ,. l; _ 'V. ’1 I [I -. VIE; I .E_ rh‘j‘.‘ t. h.__ 4 ‘ ' It 1|. J _i. " x i J i ‘- 4’.‘ L J .;' ‘LL \ H K 1 _ I. x .. L. 'iw’it - 1 2': at t 1 . an. '1' ‘I—r * at.“ (a: i u: - " T _ L! L _gL“.}fF“-,t1 .53 4A 7". {It} points) A charge of 6.551110 is at the paint (1:, y) = (1.110111 , lflflm) and a charge cf-8.34mC is at the peth (x, 5?) = {-3.flflm , 4.flfln1) . What is the electric potential at the h— _______ _._.-._ _.‘_.—--—I_- +-:--r-'1 ___I r "J z 1‘ a“ f“ :"' c] 5:36;} EH *1. mm)" : s. {E'C‘J‘M I "'—'"" ,r l i' ' r} {J " ‘- I "I h- HI..- I. : Ll i {Elf-d:- - _«.__...I :2!- LJL sheen 4’ ‘" It iii-r --': P tun-L“; p .., u: : {UL-Jinn “if” er“! refit-4f 1"”“4’ ("V J L . . . v- ' |'_ I. __ '"L z “LEI ' M ills-ii? m, - L “i : ‘ LLC 1! “ICE J L"- §1I+uu *H _ J' F J. ‘I _I E -_, I ii iii iv. Hi, L: Lin—if ff 1' av __ Lilia] H; L is, If” V’J 1.. 3. [It] pehtts} An eiectric field has the form E = (“3.25me x . How much work dcee the field de en a charge of 6.45mi: as the charge moves fi‘cm the origin tn the point (x, 3') = (3.t}flm , fl] '5' "l I:— -1 —. we- -- t c “it .. .-.'_.. [a 3‘- i '5 =- Exqtl-EC C.-. ' eke-3) _e-ZLX .-. .AJG 'rt'.‘ ,'-..r )5- L-..- :"m "V _.f-L x "'. - '. i'fi'lfi Lil-25+ :LeJe-«ri‘ in“ _.artz-tsx- -~«'--*—‘>C : it} I a I _‘h r: r _L' Pia" if t"; : 71. JUL '- 9. (1 III points} In a region ofapace, an eiectric potential has the form 1 W Volt meter . WK, 3*) = What is the electric field in this region of space? ....'5. _ 1 K 4 I __I | E r “(:3 1|I‘Irf- tick: —-‘|'-:_;Iljui_ iii-fl erhtfi L: a-IIL. {Link :fJ. J 3.x 3" r- d r: 1 I J ..L L i'.. 1“ CW» : ”‘ if. n '"rm _ ‘1 J , fXGt-titjj‘" 1: F._.3’_"'I_._J t: ,_.‘:t ... tell—r { " '1'- J‘ '. '15. t x “+1 (Ll/r ’ t I L“; LJ/fi' I q I I I -- I I -.--- k -..- I.-. (5:;- - --2c t . a. ~ 1 LLLrn-lj¥" Li'- L*" the; b , J I ll]. {15 points] In the circuit allottrn1 the capacitor has an initial charge of 8.00mi) . How long will it take for the capacitor to diacharge to a final charge of 1.5IIhnC ‘2‘ _ . .. a .I -- 25cm L J r J. J; "Vat- M at.” twa a: 4.3". C hr" J 1 t a at; La EilflrnF - -. not; - H L". -- M F. t Min #, tom 1 2 ' ~_'h _ " .r' ' 1.1L aLc t— , a _. enztfiHitt - La? ...
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RealExam2Sol0 - Principles of Phyeics II PHYS Ell-lot] Exam...

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