WorksheetsPS - Electricity
Total questions: 104
Worksheet time: 5hrs 36mins
Name
Class
Date
1.
What is an electrical property of matter that creates electric and magnetic forces and interactions?
a)
Electric Charge
b)
Electric Force
c)
Electric Field
d)
Electric Cars
2.
What are materials that conduct electric charges easily through them?
a)
Conductors
b)
Insulators
3.
What are materials that do NOT conduct electrical charges easily through them?
a)
Conductors
b)
Insulators
4.
Opposite charges...
a)
Attract
b)
Repel
5.
What surrounds every particle that has an electric charge?
a)
Electric Field
b)
Electric Charge
c)
Electric Force
d)
Electric Boogaloo
6.
The movement of electrons from high concentration to low concentration is...?
a)
Electricity
b)
Magnetism
c)
Zappage
d)
Superconductor
7.
Like charges...
a)
Repel
b)
Attract
8.
The SI unit for voltage is...?
a)
Volts
b)
Amps
c)
Ohms
d)
Meters
9.
Another name for the potential difference of electricity is...
a)
Voltage
b)
Resistance
c)
Current
d)
Material
10.
The opposition posed by a material or device to the flow of current is...?
a)
Resistance
b)
Current
c)
Voltage
d)
Lazers
11.
When electrons 'push' off of each other they cause what?
a)
Current
b)
Voltage
c)
Resistance
d)
Conga lines
12.
The SI unit for resistance is...?
a)
Volts
b)
Amps
c)
Ohms
d)
Potatoes
13.
What are the three things resistance depends on in a wire?
a)
Material, Thickness, Length
b)
Material, Length, Weight
c)
Mass, Length, Thickness
d)
Force, Electrons, Speed
14.
What is the formula for Ohm's Law?
a)
I = V/R
b)
v = d/t
c)
F = m*a
d)
a = v/t
15.
What is the resistor in this diagram?
a)
A
b)
B
c)
C
d)
D
16.
What is the power source in this diagram?
a)
A
b)
B
c)
C
d)
D
17.
What is the switch in this diagram?
a)
A
b)
B
c)
C
d)
D
18.
Is the switch closed or open in this diagram?
a)
open
b)
closed
19.
The negatively charged particles in an atom are called _____.
a)
electrons
b)
neutrons
c)
negatrons
d)
protons
20.
A(n) _____ is a closed loop of conductors through which charges flow.
a)
current
b)
circuit
c)
resistor
d)
ampere
21.
_____ is the tendency for a material to oppose the flow of electrons.
a)
Resistance
b)
Induction
c)
Transistance
d)
Conduction
22.
In which type of circuit are there two or more branches for charge to move through?
a)
parallel
b)
series
c)
open
d)
uniform
23.
In which type of circuit does charge have only one loop to flow through?
a)
parallel
b)
series
c)
open
d)
uniform
24.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
25.
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
26.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
27.
Electricity is the flow of ______.
a)
electrons
b)
protons
c)
neutrons
d)
atoms
28.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
29.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
30.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
31.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
32.
When the switch is closed, the light
a)
comes on
b)
stays off
c)
burns out
33.
If you pass a magnet through a wire loop, you can
a)
create static electricity
b)
convert mechanical energy to electrical energy
c)
convert electrical energy to chemical energy
34.
Magnetic fields...
a)
have north and south magnetic poles
b)
must have only positive charges
c)
need a conductor
d)
are only found in insulators
35.
In the Electric Motor lab, what did you attempt to demonstrate with the electric motor?
a)
how you can convert chemical energy to electrical energy
b)
how you can convert electrical energy to mechanical energy
c)
how you can convert mechanical energy to electrical energy
36.
If you have a string of lights and one light goes out but the others stay lit, which type of circuit do you have?
a)
series
b)
short
c)
parallel
37.
If the path of the current flow is laid out on a map, the map is called:
a)
parallel circuits
b)
circuit breaker
c)
circuit board diagram
38.
What does a moving charge experience when it's near a magnetic field?
a)
a stationary change
b)
a force
c)
gravity
d)
static friction
39.
What are materials that conduct electric charges easily through them?
a)
Conductors
b)
Insulators
40.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
41.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
42.
Electric charges that are different _______ each other.
a)
Attract
b)
Repel
43.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
44.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
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.
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
47.
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
48.
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
49.
What size resistor would produce a current flow of 5 Amps with a battery voltage of 12.6 volts
a)
60 Ohms
b)
2.52 Ohms
c)
1.71 ohms
d)
5.04 Ohms
50.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
51.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
52.
What kind of circuit is this?
a)
series
b)
parallel
53.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
54.
When there is only one path for electrons to move through it is called a _____. When one light goes out, they all go out.
a)
closed circuit
b)
parallel circuit
c)
series circuit
d)
open circuit
55.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
56.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
57.
What voltage is needed to cause a 50A current flow through a 10Ω resistor?
a)
15V
b)
500V
c)
500 kV
d)
0.2V
58.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
59.
A voltmeter is used
a)
to measure current
b)
in series with the circuit
c)
in parallel with the circuit
d)
to measure charge
60.
unit of resistance
a)
ohm
b)
ampere
c)
volt
d)
joule
61.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
62.
A magnet will pick up a nail, but not a penny because the nail
a)
has rust on it.
b)
is lighter than the penny.
c)
has a sharp point.
d)
contains iron.
63.
When you put ring magnets on a pencil, the magnets stay apart from each other because
a)
magnets are too weak to stay together.
b)
material that makes up the magnets aren't magnetic.
c)
same poles of the magnets are facing each other.
d)
the pencil stops the force of the magnets.
64.
Which of these is attracted to a magnet?
a)
iron nail
b)
copper penny
c)
piece of paper
d)
notebook
65.
Magnets will stick to refrigerator doors because the doors are
a)
Painted with plastic.
b)
Made of metal.
c)
Easy to open.
d)
Heavy.
66.
Which of these can move a nail lying on the table without touching the nail?
a)
A magnet
b)
String
c)
A wire
d)
A ruler
67.
Which is NOT a use of magnets?
a)
Generating electricity
b)
Holding cabinet doors closed
c)
Sorting paper from plastic
d)
Storing information on computer hard drives.
68.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
69.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
70.
Amy used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?
a)
The magnet needs glue
b)
The magnet couldn't hold due to the thickness of the paper
c)
Paper repels magnets
d)
A magnet isn't attracted to the refrigerator.
71.
What do you call it when two magnets come together?
a)
attract
b)
iron
c)
poles
d)
repel
72.
Magnets attract things made of
a)
copper
b)
iron
c)
wood
d)
plastic
73.
All magnets have 2
a)
fields
b)
colors
c)
poles
d)
all of the above
74.
The two poles on a magnet are
a)
north and east
b)
north and west
c)
south and north
d)
south and west
75.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
76.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
77.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
78.
If you cut a magnet in half, what happens to the poles?
a)
One half gets the North Pole, the other half gets the South Pole
b)
Both halves get only a North Pole
c)
Both halves get only a South Pole
d)
Both halves get a North pole and a South Pole
79.
If you cut a magnet in half, what happens to the poles?
a)
One half gets the North Pole, the other half gets the South Pole
b)
Both halves get only a North Pole
c)
Both halves get only a South Pole
d)
Both halves get a North pole and a South Pole
80.
What is responsible for the Magnetic Field around Earth?
a)
The Earth's crust
b)
The Earth's molton iron core
c)
The Earth's mantel
d)
The Sun
81.
If the North Pole of a permanent magnet is placed next to a compass as seen in the picture, which direction will the needle move?
a)
Clockwise
b)
Counter-clockwise
c)
It will not move
d)
Need more information
82.
An electromagnet's poles may be reversed by:
a)
decreasing the voltage of the coil
b)
increasing the number of coils
c)
changing the direction of current flow
d)
altering the material used to make the coils
83.
Which direction is the North Pole of this electromagnet?
a)
Right
b)
Left
c)
Up
d)
Down
84.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
85.
Electric motors are devices that convert _____ energy into _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
86.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
87.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles.
d)
the middle.
88.
What causes magnetism?
a)
the sun
b)
moving neutrons
c)
moving charges
d)
friction
89.
If a glass plate is placed over a magnet and iron filings are sprinkled over the glass, a pattern will be visible. What does this pattern indicate?
a)
The magnetic field
b)
The electrostatic field
c)
The piezoelectric effect
d)
The chemical reaction of the magnet and the filings
90.
How can a wire become magnetic?
a)
point it north
b)
add a resistor
c)
heat it up
d)
run a current through it
91.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
92.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
93.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
94.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
95.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
96.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
97.
True or False: All metals are attracted to magnet.
a)
True
b)
False
98.
A magnet will attract scissors if the scissors contain:
a)
copper
b)
aluminum
c)
gold
d)
nickel
99.
Which of the following is true about a bar magnet?
a)
Its magnetic field is strongest near its center.
b)
It is surrounded by a magnetic field.
c)
The north pole is stronger than the south pole.
d)
The south pole is stronger than the north pole.
100.
A device that uses a free-moving magnetic needle to show direction is a:
a)
Ruler
b)
magnet
c)
compass
d)
magnetic field
101.
This is a picture of a ________________ magnet.
a)
bar
b)
circle
c)
horseshoe
d)
paddle
102.
A north pole and a south pole will attract.
a)
True
b)
False
103.
Which two metals will be attracted by a magnet?
a)
iron and steel
b)
gold and silver
c)
aluminum and lead
d)
copper and cobalt
104.
The space around a magnet where the force of a magnet can attract best is called__________
a)
magnetism
b)
bar magnet
c)
horseshoe magnet
d)
magnetic field
100 %
