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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
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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
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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
{)
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--. 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
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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]
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