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WorksheetsCh. 6/7 - Electricity
Total questions: 74
Worksheet time: 1hrs 21mins
Name
Class
Date
1.
The tendency of a material to resist the flow of electricity is measured in.
a)
volts
b)
amps
c)
ohms
d)
watts
2.
Resistance is measured in ...
a)
amps
b)
watts
c)
volts
d)
ohms
3.
Current is measured in ...
a)
amps
b)
watts
c)
volts
d)
ohms
4.
A conductor is a
a)
material that does not allow electrons to flow easily.
b)
material that allows electrons to flow easily.
c)
device the detects an electric charge.
d)
device the changes voltage.
5.
Which of the charges below will attract each other
a)
[Positive] [Positive]
b)
[Negative] [Negative]
c)
[Positive] [Negative]
d)
All of the Above
6.
Like charges ...
a)
attract
b)
repel
7.
Opposite charges
a)
attract
b)
repel
8.
A circuit with two or more branches is a __________ circuit
a)
series
b)
parallel
9.
How many paths does a series circuit have for electricity to follow?
a)
one
b)
two
c)
three
d)
two or more
10.
The image is of a ______________ circuit.
a)
series
b)
parallel
11.
The image is of a ______________ circuit.
a)
series
b)
parallel
12.
Copper is a
a)
conductor
b)
insulator
13.
Glass is a
a)
conductor
b)
insulator
14.
Which on the following is NOT an example of an insulator.
a)
Rubber
b)
Glass
c)
Penny
d)
Wood
15.
A closed path that electric current flows is a
a)
circuit
b)
series circuit
c)
parallel circuit
16.
Which way do electrons flow?
a)
Positive to Negative
b)
Negative to Positive
17.
What does a resistor do?
a)
Reduces the flow of electrons
b)
Reduce the flow of the current
c)
Increase flow of electrons
d)
Decreases the flow of electrons
18.
Which of the following is not a source of electricity
a)
Windmills
b)
Batteries
c)
wires
d)
Hydroelectric dams
19.
What is the unit of measurement for current
a)
Ohm's
b)
Amperes
c)
Volts
20.
In a parallel circuit with 2 lightbulbs, if you take out one lightbulb what will happen to the rest?
a)
They will all go out.
b)
The other one will stay on
21.
What kind of circuit does the picture show?
a)
Series Circuit
b)
Parallel Circuit
22.
What kind of picture does the picture show?
a)
Closed/Complete
b)
Open/Incomplete
23.
What kind of circuit does the picture show?
a)
Series
b)
Parallel
24.
What is static electricity?
a)
the flow of electric charges
b)
the build-up of an electrical charge on a surface.
c)
the opposition of current flow.
25.
In a series circuit what happens when you add another bulb?
a)
The bulb gets brighter
b)
The bulb gets dimmer
c)
Nothing changes
26.
Voltage difference is related to the force that causes electric charges to flow.
a)
True
b)
False
27.
Different household appliances use electrical energy at different rates.
a)
T
b)
F
28.
A lightning bolt occurs when millions of protons build up and are transferred at the same time.
a)
T
b)
F
29.
The presence of a static electric charge can be detected by an electroscope.
a)
T
b)
F
30.
The rate at which an electrical device converts energy from one form to another is called _____.
a)
electrical energy
b)
electrical power
c)
electrical resistance
d)
voltage regulation
31.
A static discharge is different from an electric current in that a static discharge _____.
a)
involves the movement of ions as well as electrons
b)
is a flow of electrons
c)
lasts for only a fraction of a second
d)
results because a force is exerted on the electrons
32.
Lightning is _____.
a)
a buildup of neutrons
b)
harmless
c)
a high-voltage electric current
d)
a large discharge of static electricity
33.
One source of constant electric current is a _____.
a)
coulomb
b)
dry cell battery
c)
switch
d)
a transformer
34.
Which of the following is a device designed to open an overloaded circuit and prevent overheating?
a)
circuit breaker
b)
a fuse
c)
both a circuit breaker and fuse
d)
neither a fuse or circuit breaker
35.
In Figure 21-2 above, which circuit is wired in series?
a)
circuit A
b)
circuit B
c)
both circuit A and B
d)
neither A nor B
36.
The longer the wire, the _______ resistance
a)
greater
b)
less
37.
The longer wire, the ______ current
a)
less
b)
greater
38.
The hotter the wire, the _____ the current
a)
less
b)
greater
39.
The hotter wire, the _______ the resistance
a)
greater
b)
less
40.
The picture shows an electrical circuit. This circuit is a series circuit because:
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
41.
The purpose of a switch is to:
a)
carry electricity
b)
turn the circuit on and off
c)
provide energy
d)
create sound
42.
Choose the correct sentence.
a)
This circuit will work because it is an open circuit.
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
43.
According to this law, a charge can be transferred from object to object, but it cannot be created or destroyed.
a)
Law of Conservation of Energy
b)
Newton's Third Law
c)
Law of Conservation of Charge
d)
Ohm's Law
44.
The accumulation of excess electric charge on an object is called
a)
Static electricity
b)
Electric discharge
c)
Resistance
d)
Circuit
45.
The rearrangement of electrons on a neutral object caused by a nearby charged object
a)
Induction
b)
Conduction
c)
Friction
d)
Conductor
46.
Electric current that flows in only one direction.
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Series Circuit
47.
Electric current that reverses its direction of flow in a regular pattern
a)
Voltage
b)
Direct Current
c)
Alternating Current
d)
Parallel Circuit
48.
According to this law, the current in a circuit equals the voltage difference divided by the resistance.
a)
Law of Conservation of Energy
b)
Ohm's Law
c)
Law of Conservation of Charges
d)
Newton's First Law
49.
What is the energy involved in spinning?
a)
kinetic
b)
electrical
c)
chemical potential
d)
thermal
50.
What is the best energy chain for coal fired power plants
a)
chemical -> kinetic -> electrical
b)
kinetic -> electrical
c)
electrical -> chemical -> heat
d)
kinetic -> chemical -> electrical
51.
What is the transfer of electricity in a generator?
a)
Mechanical to Electrical
b)
Physical to Potential
c)
Electrical to Mechanical
d)
Yogurt to Light
52.
In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.
a)
Wind
b)
Water
c)
Magnets
d)
Circuits
53.
Electric fields are often associated with what other kind of field?
a)
Magnetic Fields
b)
Nuclear Fields
c)
Particle Fields
d)
Corn Fields
54.
Which device uses mechanical energy to produce electrical energy?
a)
Electric Motor
b)
Magnet
c)
Generator
d)
Solar Cell
55.
While electric current is flowing through a wire, what surrounds the wire?
a)
a magnetic field
b)
a glowing light
c)
neutrons
d)
protons
56.
Electricity is the flow of _________.
a)
Protons
b)
Neutrons
c)
Electrons
57.
Which subatomic particle has a negative charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Enlighton
58.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
59.
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
60.
This circuit has a battery, buzzer, and switch.
When the switch is closed the buzzer will sound because -
When the switch is closed the buzzer will sound because -
a)
the switch gives energy to the battery
b)
the buzzer is made of special plastic
c)
the wires are cooled by the surrounding air
d)
electricity can flow in a complete path
61.
An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —
To complete the circuit, a wire should be placed from —
a)
Point D to Point C
b)
Point B to Point C
c)
Point A to Point D
d)
Point B to Point D
62.
A student began building a circuit to light a bulb. What else does the student need to produce light?
a)
a battery that has energy
b)
a wire that is insulated
c)
a switch that is open
d)
another bulb of the same size
63.
Will this configuration of a complete circuit and light a bulb?
a)
yes
b)
no
64.
Will this configuration of a complete circuit light a bulb?
a)
yes
b)
no
65.
this is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
66.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
67.
This is the symbol for a ...
a)
Bulb
b)
Battery
c)
Horn
d)
Fuse
68.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
69.
In a step-up transformer, the number of turns of wire is greater in the _____ coil than in the _____ coil, and the ________ voltage exceeds the ______ voltage.
a)
primary, secondary, output, input
b)
secondary, primary, input, output
c)
secondary, primary, output, input
d)
primary, secondary, input, output
70.
Electrical Energy is measured in ________ .
a)
kWh
b)
Amps
c)
Volts
d)
Joules
71.
Current is measured in ________ .
a)
kWh
b)
Amps
c)
Volts
d)
Joules
72.
Voltage Difference is measured in ________ .
a)
kWh
b)
Amps
c)
Volts
d)
Joules
73.
Resistance is measured in ________ .
a)
Ohms
b)
Amps
c)
Volts
d)
Joules
74.
Power is measured in ________ .
a)
Ohms
b)
Watts
c)
Volts
d)
Joules
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