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50 RME Problems for Basic Electricity and Ohms Law 2 (1)

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REGI
STEREDMASTERELECTRI
CI
ANLi
censur
eExami
nat
i
on
Fr
i
day,
Mar
ch19,
2010
1:
00p.
m. 5:
00pm
TEHCNI
CALSUBJECTS
I
NSTRUCTI
ON:
Sel
ectt
hecor
r
ectanswerf
oreachoft
hef
ol
l
owi
ngquest
i
ons.Mar
konl
yoneanswerf
oreach
i
t
em byshadi
ngt
heboxcor
r
espondi
ngt
ot
hel
et
t
erofyourchoi
ceont
heanswersheet
pr
ovi
ded.STRI
CTLYNOERASURESALLOWED.Usepenci
lNo.1onl
y.
MULTI
PLECHOI
CE
1. A6vol
tl
eadaci
dbat
t
er
yhasani
nt
er
nalr
esi
st
anceof0.
01ohm.Howmuchcur
r
entwi
l
lf
l
owi
ft
hebat
t
er
y
hasashor
tci
r
cui
t
?
a.60A
b.600A
c.i
nf
i
ni
t
y
d.zer
o
2. Abi
nar
yal
l
oyofcopperandz
i
nc.
a.Br
onz
e
b.Br
ass
c.Al
ni
co
3. Ther
esi
st
anceofaconduct
orwheni
t
st
emper
at
ur
ei
si
ncr
eased,
a.i
ncr
eases
b.r
emai
nconst
ant c.var
i
es
d.St
eel
d.decr
eases
4. Avol
t
agesour
ceof20Vi
sappl
i
edacr
osst
het
er
mi
nal
sofa2.
5ohm r
heost
at
.Cal
cul
at
et
hepower
di
ssi
pat
edi
nt
her
heost
at
?
a. 160W
b.100W
c.150W
d.180W
5. Uni
tofel
ect
r
i
calpr
essur
ei
s
a.wat
t
b.amper
e
c.ohm
d.vol
t
6. Twor
esi
st
or
sofr
esi
st
ances5ohmsand7ohmsar
econnect
edi
nser
i
esacr
ossa60vol
tsour
ce.Whati
s
t
hepowerabsor
bedi
nt
he5ohm r
esi
st
or
?
a.50wat
t
s
b.25wat
t
s
c.125wat
t
s
d.100wat
t
s
7. Whenusi
ngohmsl
aw,
Edi
v
i
dedbyIwoul
dsol
vef
or
a.wat
t
s
b.amper
age
c.vol
t
age
d.r
esi
st
ance
8. I
nr
esi
st
ancecol
orcodi
ng,
r
edcol
ori
sassi
gnedt
oaval
ue
a.3
b.0
c.2
d.1
9. Anel
ect
r
i
ci
r
ont
akes3½ amps.I
ft
heheat
i
ngel
ementhasar
esi
st
anceof40ohms,whati
si
t
spower
consumpt
i
on?
a.0.
45kW
b.0.
49kW
c.0.
35kW
d.0.
51kW
10.Anot
hernamef
orasecondar
ycel
l
.
a.Wetcel
l
b.St
or
agecel
l
c.Dr
ycel
l
d.Di
sposabl
ecel
l
11.Twor
esi
st
ancesof8and10ohmsr
espect
i
vel
yar
econnect
edi
npar
al
l
elandt
akeat
ot
alcur
r
entof9A.
Whati
st
hecur
r
entf
l
owi
ngi
nt
he8ohm r
esi
st
ance?
a.5A
b.4A
c.6A
d.3A
12.Whati
st
her
esi
st
ancemustbeconnect
edacr
ossa4ohm r
esi
st
ori
nor
dert
ogi
veanequi
val
ent
r
esi
st
anceof3ohms?
a.10ohms
b.8ohms
c.12ohms
d.Noneoft
hese
13.Howi
svol
t
met
erconnect
edi
naci
r
cui
t
?
a. Connecti
nshor
tci
r
cui
tacr
osst
hel
oad
b. Connecti
nshuntacr
osst
hel
oad
c. Connecti
nser
i
esacr
osst
hel
oad
d. Connecti
nopenci
r
cui
twi
t
ht
hel
oad
14.Componentofanat
om t
hatdoesn’
thav
eanyel
ect
r
i
calchar
ge.
a.El
ect
r
on
b.Pr
ot
on
c.Neut
r
on
d.Noneoft
hese
Page 1
REGI
STEREDMASTERELECTRI
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eExami
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on
Fr
i
day,
Mar
ch19,
2010
1:
00p.
m. 5:
00pm
TEHCNI
CALSUBJECTS
15.Al
eadaci
dcel
li
sconst
r
uct
edi
nmul
t
i
pl
ef
ort
hepur
poseof_
_
_
_
_
_
.
a. i
ncr
easi
ngt
heemfoft
hecel
l
b. i
ncr
easi
ngt
hecapaci
t
yoft
hecel
l
c. i
ncr
easi
ngt
hei
nt
er
nalr
esi
st
anceoft
hecel
l
d. al
loft
hese
16.Ameasur
i
ngi
nst
r
umentusedt
omeasur
et
hedi
amet
erofci
r
cul
arwi
r
esi
nmi
l
l
s.
a.Mi
cr
omet
er
b.Mi
l
l
i
met
er
c.Wi
r
egauge
d.Mi
l
l
i
ammet
er
17.Theel
ect
r
oni
nt
hel
astor
bi
tofanat
om ar
ecal
l
ed
a.boundel
ect
r
ons b.f
r
eeel
ect
r
ons
c.val
enceel
ect
r
ons d.char
gedel
ect
r
ons
18.A400MCM cabl
ehas37st
r
ands.Whati
st
hedi
amet
eri
feachst
r
andi
nmi
l
l
s?
a.10.
81
b.1081
c.104
d.108
19.Thecopperf
i
el
dcoi
l
sofamot
orwasmeasur
edat21oCandf
oundt
ohav
ear
esi
st
anceof68ohms.Af
t
er
t
hemot
orhasr
unf
oragi
vent
i
me,
t
her
esi
st
ancei
sf
oundt
obe90ohms.Whati
st
hehott
emper
at
ur
eof
t
hewi
ndi
ng?
a.106.
36oC
b.166.
30oC
c.103.
66oC
d.Noneoft
hese
20.A secondar
ycel
li
schar
ged wi
t
h aconst
antcur
r
entof10 A f
or10 hour
s.How much char
gei
s
accumul
at
ed?
a.100coul
ombs
b.360,
000coul
ombs c.100,
000coul
ombs d.60,
000coul
ombs
21.Acel
lwhoseemfi
s1.
45Vhasani
nt
er
nalr
esi
st
anceof4ohms.Whatcur
r
entwi
l
l
f
l
owi
ft
hi
scel
li
s
connect
edacr
ossa1 ohmsr
esi
st
or
?
a.0.
4A
b.0.
2A
c.0.
5A
d.0.
3A
22.Whati
st
hedi
amet
erofacopperwi
r
ehavi
ngacr
osssect
i
onalar
eaof3,
969CM?
a.1.
6mm
b.7.
8mi
l
l
s
c.0.
6i
nch
d.Noneoft
hese
23.Whennequalr
esi
st
or
sar
econnect
edi
nser
i
est
oasour
ceofemfEvol
t
s,eachhavi
ngar
esi
st
anceofR
ohms,
whi
choft
hef
ol
l
owi
ngst
at
ement
si
st
r
ue?
a. Thevol
t
agedr
opacr
ossoneoft
her
esi
st
ori
sequalt
oE/
n
b. Theequi
val
entr
esi
st
anceoft
heci
r
cui
ti
sequalt
onR
c. Thecur
r
entt
hr
ougheachoft
her
esi
st
ori
st
hesame
d. Al
loft
hese
24.Gi
veanex
ampl
eofanel
ect
r
i
calconduct
or
.
a.Br
ass
b.Asbest
os
c.Sl
at
e
d.Lat
ex
25.Asmal
ll
i
ghtbul
bwi
t
har
esi
st
anceof1000ohmsi
sconnect
edacr
ossa120Vl
i
ne.Whati
st
hecur
r
ent
t
hr
ought
hebul
b?
a.1.
2A
b.0.
12A
c.0.
012A
d.12A
26.Pr
act
i
cal
l
yal
lbat
t
er
i
eshaveanomi
nalr
at
i
ngbasedont
he_
_
_
_hourr
at
eofdi
schar
ge.
a.8
b.24
c.16
d.12
27.Theener
gyst
or
edi
nanel
ect
r
ol
y
t
i
ccel
l
i
s
a.anel
ect
r
i
cal
b.amagnet
i
c
c.amechani
cal
d.achemi
cal
28.Themostcommonusageofr
esi
st
or
si
nel
ect
r
oni
cci
r
cui
t
si
st
o_
_
_
_
_
_
_
_
.
a.l
i
mi
tacur
r
ent
b.i
nt
r
oduceavol
t
agedr
op
c.gener
at
eheat
d.al
loft
hese
Page 2
REGI
STEREDMASTERELECTRI
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eExami
nat
i
on
Fr
i
day,
Mar
ch19,
2010
1:
00p.
m. 5:
00pm
TEHCNI
CALSUBJECTS
29.A200Vl
amphasahotr
esi
st
anceof400ohms.Thepowerr
at
i
ngi
nwat
t
soft
hel
ampi
s
a.100W
b.200W
c.600W
d.250W
30.Abat
t
er
yi
schar
gedat15Af
or10hour
s.I
ft
hechar
gi
ngvol
t
agei
s120V,
whati
st
hechar
gi
ngcostat
1.
00perkWhr
?
a.15pesos
b.18pesos
c.12pesos
d.20pesos
31.Howmuchcur
r
enti
spr
oducedbya60Vsour
ceconnect
edacr
ossa12k(r
esi
st
ance?
a.5A
b.7.
2A
c.20mA
d.5mA
32.I
f18r
esi
st
ances,
eachofav
al
ueof36ohms,
ar
econnect
edi
npar
al
l
el
,
t
hent
het
ot
alr
esi
st
ancei
s
a.36ohms
b.2ohms
c.648ohms
d.54ohms
33.Awi
r
ewhoser
esi
st
ancei
srohmsi
sbei
ngcuti
nt
of
ourequal
par
t
s.I
ft
hesepar
t
sar
et
obeconnect
edi
n
par
al
l
el
,
howmuchi
st
heequi
val
entr
esi
st
ancei
nohms?
a.r
/
12
b.r
/
16
c.r
/
8
d.r
/
4
34.Ther
esi
st
anceoft
hemat
er
i
al
i
ni
nv
er
sel
ypr
opor
t
i
onal
t
oi
t
s
a.l
engt
h
b.t
emper
at
ur
e
c.cr
osssect
i
onalar
ea
d.al
loft
hese
35.Anammet
eri
sconnect
ed_
_
_
_
_
_
.
a. acr
osst
hel
oad
b. i
nser
i
eswi
t
ht
hel
oad
c. i
nser
i
espar
al
l
elacr
osst
hel
oad
d. noneoft
hese
36.I
ft
henumberofval
enceel
ect
r
onsi
sexact
l
yf
our
,
t
hemat
er
i
ali
s
a.aconduct
or
b.asemi
conduct
or c.ani
nsul
at
ord.asuper
conduct
or
37.Commer
ci
aluni
tofanel
ect
r
i
calener
gy.
a.Joul
e
b.Wat
t
hour
c.Megawat
t d.Ki
l
owat
t
hour
38.Whati
st
her
esi
st
ancet
hatmustbeconnect
edi
npar
al
l
elwi
t
ha1.
0ohm r
esi
st
ancet
ogi
veanequi
val
ent
r
esi
st
anceof0.
2ohm?
a.0.
75ohm
b.0.
25ohm
c.1.
20ohm
d.0.
50ohm
39.Whenabat
t
er
yi
sdi
schar
gedi
nuse,
i
t
svol
t
agei
s_
_
_
_
_t
het
heor
et
i
calvol
t
age.
a.86.
73
b.96
c.63.
78
d.73.
86
40.Awat
erheat
ert
akes2.
5Aat230V.Whati
si
t
shotr
esi
st
ance?
a.20W
b.980W
c.500W
d.200W
41.Anel
ect
r
i
ci
r
ondr
aws15Aat220V.I
ti
sdesi
r
edt
or
educedt
hecur
r
entt
o12Abyconnect
i
ngaser
i
es
r
heost
at
.Whati
st
her
esi
st
anceoft
her
heost
at
?
a.3.
66ohms
b.4.
55ohms
c.5.
12ohms
d.1.
86ohms
42.Theabi
l
i
t
yofaconduct
ort
oal
l
owcur
r
entf
l
ow.
a.Resi
st
ance
b.Coef
f
i
ci
entofr
esi
st
ance
c.Conduct
ance
d.Per
meabi
l
i
t
y
43.Bl
uei
sassi
gnedt
owhatdi
gi
tv
al
uei
nt
her
esi
st
ancecol
orcode?
a.5
b.6
c.7
d.4
44.Thr
ee120ohm r
esi
st
orar
econnect
edi
nser
i
espar
al
l
el
.Theequi
val
entr
esi
st
anceoft
hecombi
nat
i
oni
s
_
_
_
_
.
a.360ohms
b.80ohms
c.180ohms
d.40ohms
Page 3
REGI
STEREDMASTERELECTRI
CI
ANLi
censur
eExami
nat
i
on
Fr
i
day,
Mar
ch19,
2010
1:
00p.
m. 5:
00pm
TEHCNI
CALSUBJECTS
45.A25Wi
ncandescentbul
br
at
edat120Vandoper
at
edona120Vl
i
nehasbur
ntoutandhast
obe
r
epl
acedassoonaspossi
bl
e.Ther
ear
esever
all
ampsavai
l
abl
ebutnotoft
hesamer
at
i
ng.Whi
choft
he
bul
bsbel
owshoul
dbeusedt
oappr
oxi
mat
et
hepowerconsumpt
i
onoft
hebust
edbul
b?
a.20wat
t
s,
110v
ol
t
s
b.100wat
t
s,
240vol
t
s
c.50wat
t
s,240vol
t
s
d.75wat
t
s,220vol
t
s
46.A r
esi
st
orof3ohmsi
sconnect
edi
npar
al
l
elwi
t
honeof2ohm r
esi
st
ance.I
ft
hecombi
nat
i
oni
s
connect
edi
nser
i
eswi
t
ha4ohm r
esi
st
or
,whati
st
heequi
val
entr
esi
st
anceoft
hewhol
ecombi
nat
i
onof
t
hr
eer
esi
st
or
s?
a.6.
4ohms
b.5.
8ohms
c.4.
5ohms
d.5.
2ohms
47.Asubst
ancet
hatcannotbedecomposedanyf
ur
t
herbyachemi
cal
r
eact
i
on.
a.I
on
b.El
ement
c.Mol
ecul
e
d.Noneoft
hese
48.Ar
esi
st
anceof40hmsi
sconnect
edi
nser
i
est
oapar
al
l
elconnect
i
onoft
wo8ohm r
esi
st
ance.Thet
ot
al
r
esi
st
ancei
s
a.6ohms
b.20ohms
c.8ohms
d.12ohms
49.Onehor
sepoweri
sequi
val
entt
ohowmanywat
t
s?
a.746
b.764
c.674
d.Noneoft
hese
50.Ar
esi
st
orof4ohm r
esi
st
ancei
sconnect
edi
npar
al
l
el
wi
t
haser
i
escombi
nat
i
onoft
wor
esi
st
or
s,
3ohm
and1ohm r
espect
i
vel
y.Whati
st
heequi
val
entr
esi
st
anceoft
hewhol
ecombi
nat
i
on?
a.8ohms
b.3ohms
c.5ohms
d.Noneoft
hese
*
*
*END*
*
*
SUBMI
TTHI
STESTQUESTI
ONSETTOGETHERWI
THTHEANSWERSHEETTOYOURWATCHERS.
BRI
NGI
NGTHETESTQUESTI
ONSETOUTOFTHEROOM WI
LLBEAGROUNDFORDI
SCI
PLI
NARYACTI
ON.
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