quiz5 - 0‘ PHYSICS 2B(a QUIZ 5 CODE PROF SCHULLER APRIL...

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Unformatted text preview: 0‘) PHYSICS 2B(a) . QUIZ 5 CODE # PROF. SCHULLER APRIL 30. 1999 1. A wire of resistance 5.0 Qis connected to a battery wire whose emf E is 2.0 V and whose internal resistance is 1.0 Q. In 2.0 min, (a) how much energy is transferred from chemical to electrical form? (b) How much energy appears in the wire as thermal energy? (c) Account for the difference between (a) and (b). V U Nimkfltal (KIIJ‘I'UMCQ/ of— E K {ilk—wit aw: - AE£= [first 2'1 (elllhnoe, AE; AI, To RMLL Ujfi, “\JNL loaf (Jlei E --H’-—I\Q:O E i: -— : 0.3M (HR AEEI ital. = 0333A (Lav)(2.0mlaj[LUI€t/M;n)=- PK-L R bk PHYSICS 2B(b) . QUIZ 5 PROF. SCHULLER ‘ CODE # APRIL 30, 1999 2. A battery of emf E = 20 Volts is connected across a 6.0 pF capacitor and a 200 Q resistor in series. Assuming that at t = 0 the switch is closed, calculate: (a) the initial current in the circuit. (b) the final charge on the capacitor. (c) the charge on the capacitor at t = 6.0 x 10‘1 seconds. (d) the current at t = 18.0 x104 seconds. L a) flu): ECU—6H“) DA R (M 1 fa Q“Jr/«2c, Liol:_%= E33 —; 0J0 A b) Kite—w): ac, = lax/(sunr‘fl: limo” C, : 70VC5'07“JLF)[I”EXP(&§”J$§°+% -‘i‘ <4) Lit: lewm) = %C m: 3).". exd _ I800 H0415” Qounx to m4 1: A '4le8 2B(a) QUIZ 5 CODE # PROF. SCHULLER APRIL 30, 1999 3. (a) In the figure below, what' ts the equivalent resistance of the network shown? (b) What are the currents in each resistor? PutR =IOOQ, R =R =SOQ, R =759. £= 6..OV é? : l 0‘) R91 Ki“ {3% I,_ (<1 Ry?” f2 HR Ifilfi m3“ Earl 1% :: IOUJL‘I'IIIL: L) LI: ‘2 : (7.0V :- g‘l YIU‘LA Fa)“ IUD? (UIQ, on® R97, I,LX(U7'JL Uje®h ate it: 5—;Iapt‘mlz ‘ - E—N. 60v LL — : SIXtu ACIUUJL) I I 9X I I0 K1 SOJL A *- 2 E-t‘fi INN-MM “ANNA! L3 t. ‘ ; U 2 lflxtu'a/Jt ‘3 50a. 1;. C-LIRI ._ 6'.uv-—5.tm'L/><(tuort) .. _. -7. W - . KIO RH “Yin, ‘ L A PHYSICS 2B(b) , QUIZ 5 CODE # PROF. SCHULLER ’ APRIL 30, 1999 l. (a) In the figure below, what value RINK R have if the current in the circuit is to be 1.0 mA? Take 81:39.0 v, 52 £3.94, and r, = r2 = 3.0 Q. (b) What is the rate at which thermal energy appears in R? PHYSICS 2B(b) 7 QUIZ 5 CODE # PROF. SCHULLER APRIL 30, 1999 3. (a) In the figure below, what power appears as thermal energy in R]? In R2? In R3? (b) What power is supplied by 8]? By 82 ? (c) Discuss the energy balance in this circuit. Assume that £1: 3.0 V, 82 = 1.0 V, R2 5.0 9, R2 = 2.0 Q, and R3 = 4.0 Q. . e elcanm— m. - WW ‘7," 7- rtm’i) : \Q K {13- {< «L HR (a la R,+(LL - ”(<3 I l 3 1 3 flujf‘mm’m @ =3 L3: Et’ilwl :, O L‘Z‘A Rd’flg [email protected] ‘.-——.,,~.‘3 : *0167A W Pm- “Emu/=0 (50A): _ —H(’ Pm‘ it otsxmlfiz 01L) — PM : i3 21:3: (UtHlUfl (H011): —i0 070‘} W) PHYSICS 28(b) QUIZ 5 CODE # PROF. SCHULLER ' APRIL 30, 1999 3. (a) In the figure below, what power appears as thermal energy in R,? In R2? In R3? (b) What power is supplied by E, ? By 82 ? (c) Discuss the energy balance in this circuit. Assume that E: = 3.0 V, 82 =1.0 V, R, = 5.0 9, R2 = 2.0 Q, and R3 =4.0 (2. \Q . Mu, CHI/U l“ 1.?)1 >0 "Aél‘tckkj Et iJ “ruffl7‘nj BIAQ('}7 'h ‘3 ‘ l a. G €_, Male, Pg LCD {“ét’mk} 87., 1J bzluj CIAQCjCcl REVK?7‘p “C W 0 W ‘0 JJ'W‘ a“ M { HM} LI(CU\'\'— {0M 19%. ffifl 7 j 4E; P‘s-L— JO {w “\‘IIML C5017 lyecmi ) www— 4h OW VtUMe(icat\ «KIWI qwuw’r ML (M67 , WW [Akqu‘ 0,?- hM?, (mama) we metal. at Vlfj‘ii‘l'vt JI’ij), EVH'O7 Minute. (“Cm Lake”: 1 (”mi €MO‘7 "J ‘01", Et. Jr Eh-*(ER\eER1*rEK3):L lei-0158’: (03Ht3+0.oH93§+03013) ZED] é“ Ewerj7 (Comerveé CAP “19““) be lsee), ...
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