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,( i..{. ".,tr fu {.a," r A M^a tine,j, 5n, iet, Farqllol , .%u*i If tbe poteqtial drop acrossau operating is the curibo.-*.dii;"dtigt't it rzo volts,what rent through thJfl oodlight? (.3)7.5A (1) o.4oA (4) 4.8A (2) e.5A r.i ) The heating element on an electric stovedissiof power when connected "^,". ^to aO ."fOz rvatts is the electricalresisWhat a l20-volt sourc€' element? this heating of tance (3) 3.3o (4) 36o o (r) 0.028 (2) 0.60o The diagram below represents an eleckic circuit. 4.0v The total amount of energr delivered to the resistor in 10. secon& is (r)'3.2 I (2)5.0I (3)20.,1 (4)3e0J An immersionheaterhasa r-esistance of 5.0 ohm,s whilg.drawinga current"f C.O;;;s. How. muchelectricil enerryi, d"li;;;reffi:, heater :' dr:ring200.seconds Jf op"r*Uorr-i'" (I) s.ox I03I (2) 0.0x 103i (3)s.ox losi (4)t.sx 10a i True or Folse,Highresistoncecircuifs useup morepowerthqn low R,esistonce circuitswhenpluggedinto the somebottery r The diagrarrrbelus' slros,sa <.ircrritwith three resistors. R,=4.0O R.=6.0Q Rg What is the resistanceof resistorRn? (r) 6.0o (2)2.0a €| \-/ 6 (3)rz o raj a.oo Thecurrentflowingin the 6 ohmresistoris - 0tA^r , Lft^pt z)l|of What is the current in the eirctritrepresentedin the diagrambelow? ' l.r 2n Srt 6-volt source (1)iA (2)2A ( 3 )3 A ( 4 )6 A /,^, (\o \-/ ) In the circuit diagrambelos,,s'hichis the correct readinglor meter V2? ( t ) ' 2 0y (2) 70 v (3)eov ({)ti0 v I l Is this circuitseriesor parqllef ? 6 l t I A^r, CI What is the current in the circuit reprbsentedin the diagram below? In' 2o Srt 6-volt source ( 1 ) . 1A (2)2A I ( 3 )3 A (4)6A I l I I The diagram represents a crrcuit with two resistors in series, If the total resistance f{r and R2 is 24 ohms, :,r the resistanceof R, is (l) 1,0 ohm (2) 0.50 ohm (3) 100 ohms (4) 4,0 ohms - io lb \l' -z { 14 the diagrambelow of a parallel circuit, ammeter A the current supplied by the ,measures ug-volt source. V 60.o f,i A 0 ? Is this circuitseriesor Porollel fu)fhe inthe 20ohmresistoriscurrentf lowing tLAnpr r'lA.,fs ",6A-'p, V)tt Anpr o*oss the 60 ohmresistoris @ Thepotentiqldiffe?ence Dtou I Yo'r t) ta.r u)*28V (D by ammeterA is The currentmeasured ,) LA^pt lfA,.pt i j 6t u p t t tz A^fs In the .circuit diagram below, ammeter -A rneasurestlic currerit'suppliedby the l0.-volt battenr. 40.rl ( by ammeter A is The currentnreasured e J J.o.so +'o r {) $8:l'i VY g6 --. Baseyour answersto questions throrigh 100 on the diagram below which representsan electrilal circuit. d.c. lourca 12volfs (9 , Ail LJ 96 The equivalent resistanceof the circuit is (1) 25 O (2) 6.0 O 9! (3)5.0 O (4)0.r7o 'ihe potential difference acrossRz is (s)Io.v (1)r.ov (4)L2v (2)2.0v . : is , .Q8 The maguitude of the current in ammeter Ar (2$l F) leoA u.,/ p) a0 A ;' (3)1.2A (4)0.83A ,".p9 Comparedto the current --- -ia 'r' Ar, the qre current in Az is r bss ftll \'l 2 greater 3 the sa-e 100 If ?'other resistance. were added to the circuit in the eq,,ivalent-i";il;J dD *:#"1, 1 decrease l'ln. " c*rt€ ) S+"ttu^c "f tf;;,,; ,6 In s'hich pair of circuits shorrn belos' could the rea&ngs of r<lltnreters1/, and l/, and arnmeter A be crtrrec't? 100.-v source 50.-v source (I) A andB (2) I andC so.-v 50.v source (3) C and D (4) AandD La^, Yn^Llt"^, .p A ' 1 2 uoll Za Ja q J l)ra v b"tlr"y 6o-sz-r 4 ft " h"tk"J is /" Jeries a, reJ ts ia- 6AJ- q i - <t ; f i', () ,' I L, b) Fe).uu ol4 ltrtrteltr .urrunl, fol, I la (/:4. u i l- *i /t, to 4 et he<tJure valtn"/er u t GorLJ ., r "i!" C,1 heatlu.e ro* a,< in volt" tAc I I I I , . c) C . , l . ,l,o l t re sit lunrt fr. of f" , tal E I l ll e < " " < * i l (,) R= . I I I I r) d/ . (o l<ulo le r,Lros1 lh t ( 5' t,ot- "t- - I ft-,c volh y,u dtof 60 JL / L-!- Jub. res i5 fo. 6 ta-,,'f) (, EJ #.r) .,t 122 Baseyour answersto parts a through d on'the diagrambelow which representsa circuit containing a . 120-voltpower supply with switchasSr and 52and two 60..ohmresistors. a If switch 51is kept openand switch52is closed,what is the circuit resistance? [t] b If switch52is kept openand switch51is closed,how much currentrvill flow through includingequatiousand substitutionswith units.] the circuit? [Showall calculations, Irl c When both switchesare closed,what is the current in the ammeter? d When both switchesare closed,what is the readingof the voltmeter? tt] [t] Baseyour answersto questions 58 through 60 on the information and diagram below. A 3.0-ohm resistor, an unldroramresisto4 R, and two ammeters, A, and Ao, -are connectedas shownwith a l2-volt source.AmmeterAn readsa curent of Sb;p;;A "di' 5.0A s,' 12V 58 Determinethe equivalentresistance of the circuit. trl 59 Calculatethe currentmeasuredby ammeterAr. lShowall work, includingthe equationandsubstitution with units,l [s] 60 Calculatethe resistance of the unknownresistor,R. [Showall work,includingthe equationandsubstitution with units.l [z] "l