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WorksheetsPS: "Electricity" Practice Test
Total questions: 75
Worksheet time: 1hrs 27mins
Name
Class
Date
1.
What does static mean?
a)
moving
b)
at rest
c)
still
d)
energy
2.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
3.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
4.
The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.
a)
True
b)
False
5.
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
a)
The balloons will repel each other.
b)
The balloons will attract each other.
c)
The balloons will become positively (+) charged.
d)
The balloons will pop.
6.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
7.
Electric charges that are different _______ each other.
a)
Attract
b)
Repel
8.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
9.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
10.
If the two charges represented in the figure were brought near each other, they would
a)
attract each other.
b)
repel each other.
c)
cause static discharge.
d)
have no affect on each other
11.
The buildup of charges on an object is called:
a)
positive charge
b)
static charge
c)
negative charge
d)
static discharge
12.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
13.
How many Volts would it take to push 1 Amp through a resistance of 1 Ohm
a)
10 volts
b)
1 volt
c)
48 volts
d)
5 volts
14.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
15.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
16.
Resistivity of a wire depends on:
a)
length
b)
material
c)
cross sectional area
d)
none of the above
17.
What is electric current?
a)
The number of charged particles that pass a point each second
b)
The difference in potential
c)
The resistance
d)
Light Emitting Diode
18.
As the difference in charge between two sides of a circuit increase, voltage...
a)
Decreases
b)
Increases
c)
Stays the same
d)
It is random, no association
19.
What is voltage?
a)
The difference in potential energy of the charged particles
b)
The number of charged particles that pass a point each second
c)
The flow of protons
d)
A type of dog from Central Asia
20.
What is current measured in?
a)
Volts
b)
Amperes (Amps)
c)
Ohms
d)
Coulombs
21.
What is resistance measured in?
a)
volts
b)
Amperes (Amps)
c)
Ohms
d)
Coulombs
22.
What are the two factors that influence resistance?
a)
power and energy
b)
current and volts
23.
DC stands for ____ and is used in batteries.
a)
Distant Current
b)
Don't Current
c)
Direct Current
24.
Electricity is the flow of _________.
a)
Protons
b)
Neutrons
c)
Electrons
25.
What is the unit of power?
a)
Amps
b)
Watts
c)
Volts
d)
Joules
26.
What is the unit of voltage?
a)
Amps
b)
Watts
c)
Volts
d)
Joules
27.
In alternating current, the motion of the charges:
a)
continuously changes in the forward and reverse directions.
b)
is equal to the speed of light.
c)
is greater than the speed of light.
d)
is in the same direction of the electric field.
28.
Current from a battery is:
a)
AC
b)
DC
29.
A conductor allows energy to easily pass by.
a)
True
b)
False
30.
If a material does not allow charges to move through it easily, what is it called?
a)
electrical insulator
b)
electrical conductor
c)
reistor
d)
capacitor
31.
A open circuit allows charges to flow.
a)
True
b)
False
32.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Rubber Gloves
33.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
34.
The buildup of charges on an object is called:
a)
positive charge
b)
static charge
c)
negative charge
d)
static discharge
35.
The accumulation of excess electric charge on an object is called
a)
Static electricity
b)
Electric discharge
c)
Resistance
d)
Circuit
36.
What does static mean?
a)
moving
b)
at rest
c)
still
d)
energy
37.
A conductor is?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
electric current
38.
Insulator is?
a)
material that current can pass through easily
b)
material that current cannot pass through easily
c)
magnet
d)
static electricity
39.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
chris barton
40.
wood is a _____?
a)
conductor
b)
insulator
41.
brass is a _____?
a)
insulator
b)
conductor
42.
A rubber tire is a(n) ____?
a)
conductor
b)
insulator
43.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Cork
44.
A open circuit allows charges to flow.
a)
True
b)
False
45.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
46.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
47.
As resistors are added in series to a circuit, the total resistance will
a)
increase
b)
decrease
c)
stay the same
48.
As the resistance of a resistor in series increases, the measured voltage across that resistor will
a)
increase
b)
decrease
c)
stay the same
49.
The current through each resistor connected in series
a)
will add up to the total current
b)
is the same everywhere
50.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
51.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
52.
In an electrical circuit, electrons move from the __________.
a)
Negative pole to negative pole
b)
Negative pole to positive pole
c)
Positive pole to positive pole
53.
A series circuit has ____ path(s) that the electric current can take.
a)
One
b)
Two
c)
Three
d)
Four
54.
a)
Series Circuit
b)
Parallel Circuit
55.
a)
Series Circuit
b)
Parallel Circuit
56.
The flow of electrical energy starts at the ___ side of the d-cell.
a)
negative
b)
positve
c)
complete circuit
d)
bulb
57.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
can still light up
c)
will go out
d)
of the light bulbs burn out also
58.
This is needed in a circuit to start the electrons moving.
a)
battery
b)
power source
c)
switch
d)
wire
59.
a)
closed series
b)
open series
c)
open parallel
d)
closed parallel
60.
a)
closed series
b)
open series
c)
open parallel
d)
closed parallel
61.
What type of circuit is pictured?
a)
A. alternating
b)
B.overloaded
c)
C.parallel
d)
D. series
62.
What kind of circuit is this?
a)
parallel
b)
series
c)
open
d)
chris barton
63.
Parallel circuits are
a)
a circuit that has only one path for current to travel
b)
has more than one path for current to travel
c)
a circuit that does not allow electricity to travel through it
d)
magnets that cause electric current
64.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
65.
this is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
66.
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
67.
a)
Bulb
b)
Battery
c)
Horn
d)
Fuse
68.
A flashlight bulb with a potential difference of 4.5 V across its filament has a power output of 8.0 W. How much current is in the bulb filament?
a)
3.7 A
b)
0.23 A
c)
1.8 A
d)
0.56 A
69.
A 9-volt battery drives an electric current through a circuit with 4-ohm resistance. What is the electric current running through the circuit?
a)
2.25 A
b)
0.44 A
c)
5.0 A
d)
36 A
70.
a pair of 15-watt computer speakers are connected to a 12-volt power supply. what is the electric current running through the speakers?
a)
1.25 A
b)
0.8 A
c)
12.5 A
d)
180 A
71.
What is the potential difference across a resistor that dissipates 5.00 W of power and has a current of 5.0 A?
a)
1.0 V
b)
4.00 V
c)
0.20 V
d)
125 V
72.
There is a potential difference of 12 V across a resistor with 0.25 A of current in it. The resistance of the resistor is
a)
48 Ω
b)
12 Ω
c)
24 Ω
d)
0.021 Ω
73.
A 13 Ω resistor has 0.050 A of current in it. What is the potential difference across the resistor?
a)
260 V
b)
0.65 V
c)
.004 V
d)
4 V
74.
A resistor has a resistance of 280 Ω. How much current is in the resistor if there is a potential difference of 120 V across the resistor?
a)
160 A
b)
0.12 A
c)
0.43 A
d)
2.3 A
75.
A set of electric trains are powered by a 9V battery. What is the resistance of the trains if they draw 3.0 A of current?
a)
27 Ω
b)
0.03 Ω
c)
2.7 Ω
d)
3 Ω
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