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Phys 0175 - Worksheet _5 Solution

# Phys 0175 - Worksheet _5 Solution - PHYS 0175(SQring 2008...

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Unformatted text preview: PHYS 0175 (SQring 2008! — Worksheet Problem #5 (Part A! Your Name: Z) 0 KC E if C E. g TA: Score: The circuit diagram below shows a switch (shown in the open position), a battery that provides a potential difference V=12 0 V a current meter A, and three capacitors in series; their capacitances are (from left to right) C1=10 OuF, 02:17 OuF, and 03:24. OuF. All three capacitors are unch‘ﬂfged when the switch is closed Answer the questions below assuming that sufﬁcient time has been allowed to pass after the switch is closed for the circuit to have reached equilibrium. (1) How do the amounts of charge Q1, Q2, and 03 stored on the three capacitors compare? If they are not the same, which one is greatest? Which one is smallest? You must give reasons for your answers. Cx‘ : ; 4:, ’CkGCCULSL Hui "% C(c/aaiéu s «C La gar/6C3, k55kaﬂffi? (62va 0mg AC 7ccp§ 6% +891 (CV/tucﬁﬁS . hike/m S I; NOR/(K, Iqxe‘ {LC/C RCCLi—L a. C Lovbgﬂ Cue Ccmu; (Tc/(Daze C (an M (1)ka £2: LMZ’CCLLCC) Cit/Lt T/ET{(;(;C (EL/(«ﬁat “LL71 53% C («Czar- / j/ Mg MZWL a M » MZLL Ma+ﬁ~ a; (/ r1:(€\,(\$ ﬁd£5¥vw€k¢c+(m Lf/kf, bfﬂ (Z (2) Wh t is the total amount fcharge Qtot that passes through the current meter A after the swit is (051% C; closed? TLC a?» LLLLLQLKJ/L‘f (KC/42 Ct {YLMJL Of} (I) (2( @«(C (3 (.14 fért'e’i “A, - .L _L -4 .‘ = L C- C( 2165: /€/LIF+( (F/LIF 7(ljuf (QZC/CpéMF)( m Ca, : I/w/MF. page. <0 (9? WSWW C 2&1? <9 (3) What will be the potential differences V1, V2, and V3 across the three capacitors? am 62 cgv, :> t", = Q: :5:%/. C, 5 [Lt/{4.7. £9.43; bl? : (03 A 3 5/2 \/ U; TL U3 (- L13 : C2, (7 {1/ U : (Q 3 a Z qg V ' J‘ASIY +0 ,Quz geewg- , .> 5* f ’ ( My answers are: PHYS 0175 S rin 2008 —Worksheet Problem #5 PartB (’7 I Your Name: I - W644 l elf Score: The circuit diagram shown below depicts a voltage source V=15.0V, a switch 8, and three capacitors: C1=20.0pF, 02:15.0pF, and C3=25.OpF. All three capacitors are initially uncharged. Switch 8 is first thrown to the left until capacitor1 is fully charged. Then the switch is thrown to the right, thus connecting capacitor 1 across the other two capacitors. Answer the following questions, assuming in each case that sufﬁcient time has been allowed to pass for equilibrium to have been reached. (1) What will be the charge Q on capacitor 1 when it is fully charged with switch 8 to the left? Which plate of capacitor 1 will be positive? (Q: C! V: ”zap/MFX (5,0 V: BOO/LIC/ The ftp MCUrC (Cf C avg/(WC {on fmgtﬁlt'cua b/c L"(/C C5 (ocwzecfeéC ’(‘U (‘an ”05(1Ltue 1194ng G/ff'ﬂn L¢#¢{7. (2) Qualitatively, describe what happens to that charge Q when switch 8 is thrown to the right. taken; Q Lg, “HUM/M {6’ Me “5 “L H6 P05 C (“”31 C? 0“ 5/ LLLL'H +6 ((65 Jw Jude 9., LIL §e( OU€I 6L“ ‘3 (74/9ch L716! 5 LL14 A] 'ch Screen 6. 0‘61 Jrcté/L 22545 +1 (CO/615\$; edC/(k (9/ ICC eoq , (3) What will be the ﬁnal potential differences V1, V2, and V3 across the three capacitors? , ’l. / 4 - ,, ,I ' 5 VI : g; 3 V; s. :52 : \1)}’:§Q__;:V/ (lieu? L5 (puff, L, 643/ C26 ' 2 (4“ 1‘6? 2,, (”(17 :77 C: (:2 (4) What will be the ﬁnal charges Q1, 02, and 03 stored on the three capacitors? "N 5 CO L ‘ C ‘ (,wvtCk Z; : CO :> CZ :E—( 0:0) . ngL 3, - Q3 :> 673: J—>&l / C C Q th fa}: CICQ +(% (i +(E—j—)Q,C Gilﬁ?) 5%?)sz CQ “[C 29%? x _ Q My answers are: ...
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