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ELTECH 113 Lecture (Ouiz #2, Take-Home)
Due Date : Monday, 9-9-2002 (5 :30 pm)
Instructor : Bret Allen
Instructions : Complete each of the following
by selecting the best possible answer .
(32)
multiple choice questions
1.
A series circuit has :
only one current path
. two current paths
c . more than two current paths
d . the same voltage across every component
2 .
What is the effect on total current if the voltage supplying a circuit
is halved, and the circuit resistance stays the same?
a . it goes to zero
== V/,e
it decreases by half
c . it doubles
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VS. .S~
d . it rema i ns the same
3 .
Current in a series circuit is always :
a . zero
the same through each component
,°
c . different through each component
d . different if the components are different
4 .
If a powered series circuit has a
50 ohm resistor current is 0 .5 A, what is the current flow through the
other resistor_?
--,1~ 0 . 5 A
91
b . 2 .5 A
c. 5 A
/ 0-f-292.
d . 10 A
5.
The total resistance of a series circuit is equal to :
a . the average of all the resistance values
the sum of all the resistance values
c . the smallest resistance value
d . the largest resistance value
6.
If R1 = 20 ohms, R2 = 30 ohms, and R3 = 40 ohms, what is the total
series resistance?
a . 2 0 ohms
b . 3 0 ohms
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c . 40 ohms
d©. 9 0 ohms
....~
ELTECH 113 Lecture
3
(Quiz #2)
Page 2
7.
If
is
a.
b.
R1 = 5 k ohms, R2 = 1 .5 k ohms, R3 = 200 ohms, and R4 = 1 k ohm, what
the total series resistance?
77 ohms
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207 .7 ohms
T
-.jo,O 7 .7 k ohms
7, 7
d . 207 .5 k ohms
8.
What is the total current of a series circuit consisting of a 24 V
battery, and a 6 and 10 ohm resistor?
1 .5 A
,'
c. 4 A
d . 6 .4 A
9.
/4 -2.
4T-
If 60 V supplies a series circuit consisting of a 20 and a 10 ohm
resistor, what will be the current passing through the 10 ohm resistor?
a . 1 .67 A
c. 6 A
d. 9 A
,~
s
_ . 40V = aA
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10 . What is the total current of a series circuit with a 9V battery, a 4 .7 k
ohm resistor, a 6 .1 k ohm resistor, and a 450 ohm resistor?
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b . 1 . 9 mA
.'y~cro1
c . 2 0 mA
6~tDD,f"
~Y,?vo~fd . 23 .4 MA
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11 .
=
What is the total resistance if a 5 k ohm, a 40 ohm,
resistor are in series with a 12 V supply?
a . 34 .5 ohms
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b . 345 ohmss
~
d . 5 .7 k ohms
12 . As
a.
b.
c.
and a 300 ohm
It
'3y
you add resistors in series to a circuit, the total current will :
increase
slowly increase
remain the same
decrease
a 2 k ohm resistor, a 3 k ohm resistor, and a 4000 ohm resistor are
a series circuit, which resistor will have the larger voltage drop?
the 2 k ohm resistor
the 3 k ohm resistor
--#G the 4 k ohm resistor
d . the applied voltage must be known
OK
13 .
If
in
a.
b.
ELTECH 113 Lecture (Quiz #2)
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14 .
If 3 resistors of 1, 2, and 5 k ohms are in series with a 20 V battery,
what is the voltage dropped across the 2 k ohm resistor?
a. 2 V
57 V
---~© 5 V V
d . 10 V
X
' 14
15 .
When a 3 V power supply connects to three 3 ohm resistors in series, how
much current flows through the resistors?
0 .33 A
, 0 .66 A
s-+ = V i
c. 1 A
d. 6 A
A Tia IN ~.
16 .
What is the supply voltage when a 5 k ohm and a 4 k ohm resistor are in
series and 6 V is measured across the smaller resistor?
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a. 6 V .
... V .. l0 1~
Q 13 . 5 V
d . 16 V
17 .
V
2 A?-0TAL = (
. .0015',? ~~1 oar}
When the resistance across R1 increases in a battery powered series
circuit with R2, what effect does this have on Rl?
a~ R1 voltage drop increases
b . R1 current decreases
c . R1 current increases
d . R1 voltage drop decreases
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18 . With R1 = 12 k ohm and R2 = 8 k ohm in series, 12 V is measured across
R2, what is the voltage across R1?
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VA
a. 8 V
80 a u ,1L,
b . 12 V
..~ c . 18 V
(R I) WOO er
Y 20 V
4a
.'
19 . With a variable resistor R1 in a powered series circuit with fixed "
resistor R2, if R1 is adjusted so its voltage drop decreases, how will
this affect the voltage across R2?
...~ aO it increases
b . it goes to zero volts
c . it remains the same
d . it decreases
ELTECH 113 Lecture (Quiz #2)
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20 .
If a working circuit has a 2 M ohm resistor that has a 3 V drop, and it
is in series with a 3 M ohm resistor, what current flows through the
second resistor?
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a . 1 ,u,A
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c . 2 [tA
d . 4 .5 [uA
3MJ2
21 .
In
V,
a.
b.
a 120 V supplied series circuit, if the voltage drop across R1 is 20
and R2 drops 30 V, what voltage is developed across R3?
40 V
50 V
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70 V
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d . 120 V
22 . Which
a . Vx,
f YzVx
c . Vx
Vx
V
is the correct voltage-divider formula?
= (Ix) (Rx)
= (Rx X Rt)/Vs
..,
k
= (Rx/Rt) /Vs
= (Rx/Rt) x Vs
23 .
If a power supply is connected in series with 6 k, 8 k, and 11 k ohm
resistors, what percentage of the supply voltage will be measured across
the first resistor?
a. 3
b. 6
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24 .
A voltage divider is always a :
a . series-parallel circuit
b . bridge circuit
c . parallel circuit
series circuit
25 .
In a series circuit, the voltage measured across an open will be :
a . zero
source voltage
c . infinite volts
d . the normal voltage drop
ELTECH 113 Lecture (Quiz #2)
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Page 5
26 . What is the total current?
a . 12 mA
b . 2 MA
c . 3 mA
.."~ i 6 mA
IV,
6 .000 . A
R1
1k0hm
T
6 .000 . A
12V
27 .
What is 12?
a . 12mA
b . 8mA
4MA
d . 1mA
4 .000 .
R1
R2
2kOhm
1k Ohm
28 . What is the value of R2?
a . 100 S2
b . 200 0
..*0 3 0 0 Q
d . 400 S2
Multimeter-XMM1
1775 .000 Ohm
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ELTECH 113 Lecture (Quiz #2)
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29 . What is the total voltage?
--*(n 12 volts
b . S volts
c . 4 volts
d . 1 volts
167 V
30 . What
a . 11
11
c . 11
d . 11
is
.0
.2
.4
.6
R1
the voltage across R2?
volts
volts
volts
volts
1kOhm
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~
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R2
R3
R4
2kOhm
3kOhm
4kOhm
56V
71
L31 . Which component is shorted?
a . R1
b . R2
(D R3
d . R4
R1
R2
ELTECH 113 Lecture (Quiz #2)
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R4
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32 . Which component is open?
a . R1
b . R2
c . R3
® Voltmeter V3
1k0hm
T
36V
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33 .600 V
2kOhm
I
28 .800 V
ELTECH 113 Lecture (Quiz #2)
-END OF QUIZ-
4kOhm
I
0 .000
8kOhm