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7 Quiz 1a

# 7 Quiz 1a - Exam PHYSICS 28 SPRING 2011 SEC(A QUIZ l...

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Unformatted text preview: Exam PHYSICS 28 SPRING 2011 SEC (A) QUIZ l Name_ProfessorS.K.Sinha 5 OLN'V10N5 { bshotwe ll @ “43“ 89’“) Coulomb's constant k = 9. 10‘9 N. m2/ C2 (epsilon)0 = 1/ (4111‘) =8.85 . 10-12 C2/ N. m2 MU LTlPLE C HOICB. Choose the one alternative that best completes the statement or answers the question. . ' ’ 3653. -’ . . Figure21.2b » _ g = Icy; 6c) ’_ kg); 6C)“: LC? 60 bc m ace“; 5° (Olga), [(033004 * 0.703»: 4" 4‘4, Uriah 2 E; 2: '5 MOO "/9 m = E k0. A) + kapcoso (24.0" (' x {ll-mm}; kQaswg a) ' x 9 ﬁ-l-u’ ’77 g.u)=3\$- 3° + , . 3 I! ogl’ht C? 1 =- .0 51C 2 = +2.0 uC, are la as shown. In Fig. 21.2b, that-component of the electric ﬁeld, at the origin 0, is closest to: A)-570N/C B)1000N/C D) 570N/C E)-380N/C 2) A dipole consists of charges £5.00 uC separated by 1.20 mm. It is placed in a vertical electric ﬁeld of magnitude 525 N/ C oriented as shown in Fig. 21.4. The magnitude of the net torque this ﬁeld exerts on the dipole is closest to: A .. a J Rememtrrl F POM“ A)3.15xlO‘6N-m a "L’—‘-' P r 5 GM (.) 4, (+) B)l.21u10'5N-m A L a ‘. ’ C)1.01n10-6N-m » K It! 4 lpHgIsMQ D) 2.02:10‘6N-m E)2.41x10—6N-m __,_ (500 “0"C) D0 raga) (59\$ %—)s~n(/‘/O°> A It! 5 9.0-7klo" N'm A—l (6" / Figure21.6 Fe?- 0.‘{3/ '0 W19“ 5 39-. ~ lélslaﬁl-A o.vez~=/0|('75°§> 70959:”? 3) A point chargeQ of mass 8.50 g hangs from the horizontal ceiling by a light 25me thread making an angle of 30" to the vertical. When a horizontal electric ﬁeld of magnitude 1750 N/ C is turned on, the charge hangs away from the vertical as shown in Fig. 21.6. The magnitude of Q is closest to: A) +3.o,.c B) +3.5,«c C) 47.6 uc D) 55.0 uc Figure 22.3 Saran A Res no charge, b/c 41¢. ﬂ W64»? feat»! 9W B has 5:0 ':> NO dado-:94 W~l9¢ .‘fﬁug’ pqt€a¢¢ I““ d” '3 Carrie; ﬂu. '900nC W? e'hb °" W? 3“"M 1305'. 399%“. (4%": r" 54654 03 ' (“‘4 Rally heed ‘M‘s +° 'f’m 0,33,D Maw fable.” *4) — - _ — — —-L- 0'89”. 0.9ln 4) Two hollow conducting spheres have a common centerO. The dimensions of the spheres are as shown. A charge of -200 nC is placed on the inner conductor and a charge of +80 nC is placed on the outer conductor. The inner and outer surfaces of the spheres are respectively denoted by A, B, C, and D, as shown. In Fig. 223, the charges on surfacesC andD respectively, in nC, are closest to: A) 0 and +80 - B)+80and-120 11; way. law cé D Ms 5:, -0, so 9; O+200and480 . o 0) undo Gcass’: Lao 4 garage. emit.le (or-WM ‘fQ Oufer E) 200 (1-120 b concludvr enclose; 40 0hr}e.’f‘us,+o cancel "KW, ’ 9900C C‘Mrae on #1 heel O'ﬂéfh”, a Giulia; +a 004\$ nusﬁ etisf on 5ur¢¢¢ C_ 3.x“ 1‘6; my." C4,?! on M 0W!" MnJuchr I3 +‘Bonc, we (‘40:) «up, mm" be a ’lQOnC A—2 chatae on D 5: ﬂex? aoonc — iao ac: 30nC (M e 0"? C5,,oc 04 O‘WOC M. c '7 c on s Oer whom. Figure 22.6 ﬁe, Gwsw'v-n SWIG-cc 05h! “aioicvi «I. “1'35 exam; on ‘th ‘ch matucéot. \’ cylihozfl"—(» BY 6yme£rfl cue (Mow = Er (I, U‘d“! allow! us +o smP‘Vv‘y Gum’s Law. 28 mm ;‘——-> <——————> 30 mm «— 49 NT s—o NT *9 5) The cross section of a long coaxial cable is shown, with radii as given. (Radii to A,B. C, D are 28 mm, 30 mm, 49 mm, 51 mm respectively). The linear charge density on the inner conductor is -40 nC/ m and the linear charge density on the outer conductor is -20 nC/ m. The inner and outer cylindrical surfaces are respectively denoted by A, B, C, and D, as shown. In Fig. 22.6, the radial component of the electric ﬁeld at a point that is 34 mm from the axis is closest to: A)—11.WN/C B+2L000NIC «he 45 War Gan-9"!“ SJrPucc A CY‘K‘WJ-ef‘ m D)+ll,N/C (W'FHA ~M¢ we, duds 05 ‘HQ maﬁa! 0335(6) 0‘: E)zero Matias (3Hmw1)ﬂmﬁ( (“9% L- 85“? = 92:? => mam/mu) = «We/aw (-‘fw '5’C/ 3 Er" M = -.')looo A/ QWEO(3‘Ik/o’7m C A-3 ...
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7 Quiz 1a - Exam PHYSICS 28 SPRING 2011 SEC(A QUIZ l...

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