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2000_001

# 2000_001 - M l"1 W Wrigéav?“ I(2 W1:— ‘f[ll V j...

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Unformatted text preview: M l/"1 W Wrigéav; ?“\ . , I (2) W1:— - ‘f \/ [ll] . V: j ‘ / L J? a of <1 w ((Mvsé‘ ,. \591) / ‘ ‘ ' r3 ,3 “N, fr ’ 49 ou!’ VA" ' ” / (ll/X‘zrfq' "(7 ‘ /’€O.9€ ' I I“ I I a, 1.45149‘ {3" y {.3 C's-Ur ' v M p (#0! '0 jfcjfi ‘5’: I " v":/; as f ' ' / , =3 ,3 .__. 1! ll”); 0'5 I U 3 («Q‘s/i 6W” J/ / 0"» v <0 ({Aﬁvcgwd CIA/(5201- 9’»; I UCes 7%; r , , “A j C f, 1‘ “a? .lr/lfl- BB 325 Engineering Electromagnetics Quiz #1 October 19, 2000 8.5L l’ Igtcm', Name Problem #1 What are the expressions you use to calculate the energy in the electrostatic field? What is the fundamental difference between them? w ,» \E , Si. . I; :1 j‘ f. HE 325 2 October 19, 2000 RE ~I ~f5r‘um 1' Name Problems #2 Given 8m 2 1, 8R2 = 2, and E1 = - 15a1, + 45a2 V/m, let the boundary surface contain the origin, and let the vector A = :23} + 5ay + 14az be normal to the surface there and let it point from region 1 to region 2. E£\ = 1152 E : Sgdx *lélq (1! q , @243»! : gglgxog, Du ’ lo L v V f ’ % (as A : LT, ‘ cw»: “mg 2 / M 5; - \‘ :. . ' L 0 ﬂ— ’ ‘ v .lElfg—lj}; (gr, (bracts) ..t ;E/é:éoér E1 : 2.éSéx/o“[oqx~ l‘gzgx/o“ »/ 2:75;” -: a if" @142? 0‘ ‘ BSA y cos @A : DNA ﬂ Ms [50> , “9‘ 77—7 ’" t 5 8‘8 LH “4 “Lt (Chit, Hg) 40 ~ ‘02~ 58 ,1 I [ 8%):33..7’357 ﬂ \ W; "m ' “‘" “h w > f E D[ g {M QL :—~--» 7, \ A v 6 H "5'77? ~ (9‘9 AFC“ 01\$ '94”); L ¢\i \‘0 / ’ x} .v .vr—w‘ '1 1 +0” (satin) » v4, : \ : ‘Wwﬂmi / HE 325 3 October 19, 2000 K36“! 1mm: Name Problems #3 On the line connecting two (point) charges q1 > O and q2 > q}, find the points in which the electric field intensities produced by the two charges are equal in magnitude IE1! :2 IEZI. E13 325 . 4 October 19, 2000 14/1} fawn/1': Name Problem #4 Two parallel conducting plates each have a surface area of 2 m2. Their separation is 1.25 mm in free space. A 100-V battery is connected across them and then removed. (a) Give the magnitude of 7/045, D/I/P; ,WE, a{ind (b) A sheet of dielectric, 1 mm thick a d with the same shape and area as the plates, is now slipped carefully between the plates. If 8R 2 5 for the sheet, give the magnitude of%,£,E,/55, [QC WE, and/C, and also E and/16 in the dielectric materials. it” a an a) y w ‘ VQ'IOOV F=L/—: '00 g:goor)o\i 0:6)E:7,O\S3MO7’A,,L ,. c) [lgNd r0 ‘ D; g : /0837</j?(/ml, '54—:{5 : l.’+lé77k/o'7S F"?! c. a ‘4 - — S Q NLVOWPSA /,q/47Mo C wf :éguﬁ 7,085/tm‘3 J 9 Luff, 7W" ' .a-smw ’7 p ‘\ UP), - L _______ “‘J 0 a? y 1‘9 “:1 10:7 a83wﬂ¢ 2/ ' - 2'” I m , : #147 “6 _ 0 V/ q I X” C ér7,(55’32</o>i/m2_ [5:107]: éOEA— 7?7€¢3 a, 2, V C: ff, (2 : .7, If ‘ (lift/1 ([3513: 3310273; I"? 7 / a; 7K v: ng§st :3 <2 :22 {ﬁg S ' , f _ ‘ (1 t A \ " a — '.\\ <2 I We, 7w?” W K 8S [MA/O ? U : ~ 2 ~ —— r’ ’ J) 0 MC {ﬂi‘émwﬂ C’g'lég/‘ixzoiiﬁ/ I v ,. — —\._~‘___\ “ ,..-.#._._i_., . We.f:-3’;_X/\ >4” WE : 1‘ C V1 : “i ’7’ \ ,k\§\ \ -5 i" ~14 l A jg); 4“//IE " // I j.- fm olmfewv’vfc Mimic/4: v-:‘"‘"‘-‘ /' f: - 3 C “NM” £79. :2. :; x . l ,, e ‘ {S7770L;£_u V, tﬂ/i ., [IR ...
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