2000_003 - Problem #1. An air capacitor with plate...

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Unformatted text preview: Problem #1. An air capacitor with plate separation 1 mm and plate area S = 367: cm2 has charges of :t50 nC on the plates. Find V, D, and the energy storage WE. Without disturbing the charges, to what'yalue should the separation of the plates be changed to double the: W F, A (a) voltage; 1:, “Co '{va-l lw. - LI C;g_ :32 (b) energy storage; Ho x1073 gmstex“ k/o 0Q (c) capacitance; V _ ~ ‘ Us 6%: (d) electric field intensity; 433 xTios‘WM ’9 ' (3) surface charge density? 4,42, 34 0'8 gm \E'gh gl’gbfié'd(m‘b Q: sane \x, 9‘” 60E : g - ____ 3 ’ ’ “W g ,m. ‘ ~-' 1‘ AA» 9" f' \ S 7' A”. Mn.-.“ _¥-‘—:-I--—n— — ' H“__~__ ___ L‘f.l..~4 EAR wt V $9534 6' “J . I a, 1 : ~. tw’ :‘ l. ' 8}” kn) Hp» ? [ff k. A E Z’thfi.‘ /(o/ (’Ufigéri’lT-BL'fiqfiES) (“a :3) ‘H‘ hymn“; sixth-m- 1"(-»w'w Aié‘it‘g’é . I s I. I") (s 7,) ~ (7; It" r f f z " °” —— “p 1,r ,' ‘ r 9 = see : W 63 9‘ W“ ‘ .l - C" V0 _ u. ‘ "V a 325) 14120 February 28, 2000 Vuyhto‘k/ roblem #2. Three identical point charges of 4" ,‘ .. @EESZWS‘v f“ Februéry 28,2000‘ ' ' ' Problem #3. Within the cylindrical region p.55: C / m2. . - ' (a) What is the 201111;}? charge dens (b) What is the electric flux density” (c) How much electric flux leaveé; (d) How much charge is contained? ‘ ©\\ 5%; g; 3%, K?“ W \ - .L. a) M vs , 9 5,2; We)- .3, .33 435‘?) 2 g (391 9 L39 G b - . ._ .fi’v" A uniform surface charge density: rectangular region x = O, -1 s y s 1," approximate E at: (a) (2 X 106,0,0); (19) (2 X 104,00); (c) (200,0,0). (All dimensions are in meters.) I a/ , z": /\ V j /’ V be: .- x. 1m 251?? A. D ,/ \ / ...
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2000_003 - Problem #1. An air capacitor with plate...

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