Q7 - 1. Two inﬁnite parallel wires at a distance of 3m...

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Unformatted text preview: 1. Two inﬁnite parallel wires at a distance of 3m carry currents 100A and 50A in opposite directions. . V ‘ (Sec-Ln a) Calculate the magnetic ﬁeld at the location of each wire, due to the other wire. b) Calculate the force on each wire due to the other wire. c) Is the magnetic ﬁeld zero anywhere? Prove the answer by doing a calculation. _) .1 V {5-1 ﬁ' .4 \ Foggy) 04 HVJrHIJ) 6 (ox'ﬂlll JJvJ/l Jag.) LX _) .4 _> Iitwk “‘3" ja'gk 53/31; M3ﬂoi/t W w, 1 NH“ 9 q‘r F 3 &v r ; J I M 5%] “Evan MR.ka J 0t 5i : MAeﬁqvxto” 1;”. ( > . | "0“ — A» “DA ,. -(, / arm J: é.é7xlo T3 (D 9,4 3,4 ) ‘J’ I ‘4.» .\W Two 59: {2,13 ; MO 7 (WALK . Drt"(3/-'\> -—3 __\ 2;) F .: I L x [3) TWO W‘W N‘TL (/Jrc’vt'h {54013.3 Jw‘veetLuj ® Ol’vJNys eec-L. 3"“‘0. / 7: 5 —. failing) :‘twto 4; (lmllmtl . art‘m Q (3%) (F?) Pie/H :w‘re 1 W Q” X AW («*X "We :\ E“, 3 0 r X _, 0‘ ~ é A—ILJ0‘7} q “9‘1 90'“ V X 0‘” If: ' ” week, i F3 l. A very large coaxial cable consists, as in the ﬁgure be10w, of an inner solid conductor of radius a and an outer one of inner radius b and outer radius c. Assuming equal and opposite uniform currents i in these conductors, calculate the magnetic ﬁeld for ( (a)r.<_a;(b)aSer;(c)bSrSc;and(d)r2c. CD AID U ‘J I) 5 seal-7L Eidﬁcﬂoj'w AMero/x [03175 We 3’5? (,«V‘elo; _ 2. A long hairpin is formed by bending a very long wire as shown in the ﬁgure below. If the wire carries a 10 A current, what are the direction and magnitude of B at (a) point a and (b) midpoint I)? Take R = 5.0 mm and the distance between a and b to be much larger than R (each straight section is "inﬁnite"). ( Seth/1 ) 5 4&0 5w p .._'_. Pmum 30-1y .\Ra .b i MG (“MK qvﬁ / E :2; ; my, (all 52 ﬁtttﬁﬂtraﬁe) LOW. .Avnl EL?“ : . W91»? II._(;M1¢.f+/vme.> 1 Ed - : l .' ._ . Quill a _ or 5V“ 8&qu 61» ’v {4.2}, 17 :. qi’ﬂ‘oq 35‘on) ho. WK Tr(90rlo"’/) m2, 7 Roux/w Q W‘dex I"; you Curd/xx!" LVOW WHﬁM ; ,'(< "J; 1 JZ J : M M g?» *F r (3)“! “(VC‘WM’N’Q 11' r3 §;A«ﬂ—ﬁjm = [all L? (“1&2 Lin—(8 £11. 3°}? 0"¢V’“‘RFQA¢€/ : vvk‘ ‘Hrfi I é—f-‘X J K 9 M M) 9/9»; 41” F) ‘Pn’ (3 g *3 L 4,; 8:, fsMbM\$ jig} IA Ly “W Q r1 qrr «(3(th A é‘m F; ix3+R7) Na §\&" g g a f“: MI). K IL [3%3’” NWW’J L7 ZA”) w (:2 Raﬁ a w— [\$47 ,) Ran MEVH/ wIWL/ 5;” 061 0L>-do) 0&4 welawc/ g’; /_:>EE<1’— - ’—0-°—)-//3ZE.3 3/2.??? QVR 00 0‘) q“ awk FD" at Seh5"\£";" WW) 1:99 W} 0‘50) Wﬂbtl/zwo “‘5, all? 21 ~— _ AI“ 8 q—nfz ()3 _ O) '5 qu if Tie, save, ‘Far 'Hg/ Lo‘Hon ww. FUN-+1 7Q”. aphid; QWK’XQM) MAJ Mb 0’! ﬂex/5W; page. 3. In the ﬁgure below, the long straight wire carries a current of 30 A and the rectangular loop carries a current of 20 A. Calculate the resultant force acting on the loop. Assume that a = 1.0 cm, b = 8.0 cm and L = 30 cm. (Sec—My, A) A150 see, HU Pal/em 3 0‘3 g/ n.) wealthy, amt.) m4» Eon-He me We my 0} wt L w‘ll hm, M M Hm Hat wit QMJW own Mall at»; MW my»; @ ._3 BMW ﬁhﬁ Mk (9059, 45' 6-” foehtjj LLLWJ \MM, ~13 339'ch mFM-kwtw/ £9 3 ; full m Q“, U u ® Ml‘ llcpago) ; [4011 11L . 3’ ® ( lrwl {V M”) New“ ‘3 gr COIN—0+ AW'lv-DAB >7 \ 14mm 12 (somtaoAxoaomxomgwl 3 3:: 3.1xlok }W(o,0r,(>(o-c>t,x+o.06ﬂ 3. A rectangular coil of wire carries a current i and has a width 0. lfthe lower end ofthe coil is held between the poles of an electromagnet of strength 8 and directed as ( shown in the ﬁgure below, calculate the magnitude of the force F. ‘FQJ’J’ 5944'?“ 5) ‘77 He Coil. OJ; 00” will CMQJ 0J+)\$\\4c{/ vii“? polar M opﬂosyk‘la 0&W%wg\ (My (3 MPQ/F—MJwWle)\$O {ZKE}= L5 ...
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This note was uploaded on 03/23/2009 for the course PHYS 2b taught by Professor Schuller during the Spring '08 term at UCSD.

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Q7 - 1. Two inﬁnite parallel wires at a distance of 3m...

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