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.> ._r 501- U7Page 1 ELTECH 113 Lecture (Quiz #3, In-Class) Date : 9-1.2-2002 Instructor : Bret Allen Instructions : Select the BEST possible answer for each of the following twenty-six (26) multiple choice questions . 1. Parallel connected components form : branches b . open circuits c . short circuits a voltage divider a. 2. A parallel circuit differs from a series circuit in that a parallel circuit has : a . no path for current flow b . fewer paths for current flow c . one path for current flow more than one path for current flow 3. What is the total voltage available when :-three 12-vc1t, 2-amp batteries are conner,~ed in parallel? a . 4 volts 12 volts 1aV ( T' . 24 volts d . 36 volts 191, 4. Which is considered as the common reference for a parallel circuit , a . current b . power c . resistance voltage 5. Which formula is correct for a circuit with two resistors, parallel? It = Il + 12 b . Rt = R1 + R2 c . Vt = V1 + V2 d . Vt = 1/V1 + 1/V2 6. The total resistance in a parallel circuit is : -400less than the smallest resistance b . equal to the average resistance c . eaual to the sum of the resistances d . more than the largest resistance ELTECH 113 Lecture (Quiz #3, 26-multiple choice questions) R.1 and R2, Page 2 7. If a resistor is added in parallel to a working circuit, resistance will : a . increase decrease c . remain the same d . cannot tell the total 8. What is the total resistance of a 45 ohm and a 36 ohm resistor in parallel? . . ohms a. 9 7- f , f _ --320 ohms y5~ 3~1L 40 .5 ohms e1 l 4 , d . 81 ohms 34.) rn ~5 f 3~ 9. After proper construction on a protoboard, the total measured resistance of a 3 k ohm, 4 k ohm, and 12 k ohm resistors in parallel should be : 1 .5 k ohms b . 2 k ohms c . 6 .3 k ohms d . 19 k ohms 3000 '4Yvoc3 10 . What is the total resistance of four 1'k ohm resistors connected in parallel? a . 200 ohms 250 ohms c . 400 ohms d . 4 k ohms 11 . What is the total resistance of a 154 ohm resistor and a 42 ohm resistor connected in parallel? D33 ohms S y~ b . 36 ohms . c . 98 ohms AV T a l 5 4,? r-L 4" 4.? _S_ t d . 196 ohms 33-03 3-0-- 12 . = - What is Rt for parallel connected 1 .8 k ohm, 2 .1 k ohm, and 2 .8 k ohm resistors? ,a 670 ohms b~ 720 ohms c . 2 .23 k ohms 8 KSz_. j 07.1 K -Cid . 6 .7 k ohms 11 . a. )eT ELTECH 113 Lecture (Quiz #3, 26-multiple choice questions) Page 3 I-S71 3K sK yk ~~< 13 . - If three 4 k ohm resistors were connected in parallel with four parallel 3 k ohm resistors, what would be the total resistance? a . 240 ohms b~ 480 ohms c . 6 k ohms d . 24 k ohms 14 . What is the total resistance of fifteen 2 M ohm resistors connected in arallel? a133 k ohms b . 300 k ohms c . 750 k ohms d . 30 M ohms 15 . If two parallel connected resistors dissipate 6 watts and 10 watts of power, then what is the total power loss? a . 3 .75 watts ^_ (,J 'f" 1 L-> W b 4 watts 16 watts TvTA L d . 60 watts a the power loss of a 100 ohm 16 . What is resistor that develops 5 V across it? a a . 5 0 mW V (LE; V) .-*0 250 mW = D, a S c . 500 mW j O O -(L_ d . 500 W 17 . When parallel resistors are of three different values, which has the greatest power loss? 1l the smaller resistance _ y `.r. b . the larger resistance c . they have the same power loss d . voltage and resistance values are needed 18 . How much power is dissipated when four 4 .7 M ohm resistors a-e parallel connected to 94-volts? a . 2 0 [tW M-D-~-:Z . / 75tit-IL b. _ 80 [xW rx 1 .88 MW "Y 7 .52 mW T ,- ~, / s l0) ELTECH 113 Lecture (Quiz #3, 26-multiple choice questions) Page 4 19 . If while troubleshooting parallel resistors one of them opens, what happens to total resistance? O it increases b . i t. halves c . it remains the same d . it decreases 20 . What is the total voltage? --4(D12 volts b . 24 volts c . 36 volts d . 48 volts VL .. V1 1 < 1kOhm 21 . What a . 12 b . 24 --1*0 36 d . 72 12 .000 2< 1kOhm is the total voltage? volts volts , volts volts 12 .000 V R3< 1kOhm 12 .000 Y V1-- V1 36 .000 T 2 < 1 kOhm L36M00 3< 1kOhm L 36 .0001VI, ELTECH 113 Lecture (Quiz #3, 26-multiple choice questions) Page 5 22 . 23 . What is the total current? 3624 ~tA b . 384 EiA c . 2 .76 mA d . 3 .6 mA What is the total resistance? 545 S2 b . 555 S2 c . 565 Q d . 575 Q ~~fl 1 S Orvt r L /~ .e. t3L Gtit ~rr~'~ s7 rye ~"~^ Dv0-JZ 3kGhm 24 . What is the value of R2? a . 250 0 b . 275 Q 300 S2 d . 325 Q x, Muitimeter-MMI 1 38 .462 Ohm da 6000h m F-- 7 tc'T ELTECH 113 Lec ture '4° a = (Quiz #3, 3 0 0 __IL.. _ 26-multiple choice questions) W~q S -1 ~t ~ Page 6 25 . 26 . L4 7- What is the value of R3? a . 40052 b . 60052 c . 80052 1 kQ What 44 b'. 44 c . 44 d . 44 is .0 .2 .3 .4 s .7. sy .2 Al sa Multimeter--XM M l the total power for the circuit? W W v )(c2. W W ~= Y/-/" 05 11") 300hrn ELTECH 113 Lecture -END OF QUIZ- 7 Yo? A~ (Quiz #3, CL~ SL~S7- 1S ~. , 26-multiple choice questions) r4r~lSt...~~ y 4-1 . o t,J