WorksheetsElectricity and Magnetism
Total questions: 59
Worksheet time: 2hrs 38mins
Name
Class
Date
1.
What is this?
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
2.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)
add more wire coils and/or batteries
3.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
4.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
5.
Which of the following could be used as the core of a simple electromagnet?
a)
drinking straw
b)
iron nail
c)
a soda bottle
d)
an ink pen
6.
A piece of nickel will be attracted to
a)
only the north pole of an electromagnet
b)
only the south pole of an electromagnet
c)
either pole of an electromagnet
d)
the iron core of an electromagnet
7.
What is the purpose of a switch in an electric circuit?
a)
to allow the circuit to be opened or closed
b)
to change the direction of the current
c)
to provide a push for the current
d)
to increase the electric power to the load
8.
Electric current flowing through a wire produces
a)
static electricity
b)
an open circuit
c)
a permanent magnet
d)
a magnetic field
9.
What is the purpose of an iron core in an electromagnet?
a)
to hold the loops of wire in place
b)
to make the magnetic force stronger
c)
to change the direction of the electric current
d)
to change the direction of the magnetic force
10.
A scientist observed that the needle of a compass moved when it was placed near a wire carrying an electric current. What did this observation show?
a)
Opposite charges attract.
b)
Electric current generates a magnetic field.
c)
Magnetized wires generate electricity.
d)
Like charges repel.
11.
A student is investigating how changing the size of the core of an electromagnet affects its strength. Which of these is most likely the dependent variable in the student's investigation?
a)
the number of wire coils wrapped around the core
b)
the number of paper clips picked up by the electromagnet
c)
the voltage of the battery used in the circuit
d)
the size of the piece of iron used as the core
12.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
13.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
14.
Two batteries in a circuit make the lights in the circuit brighter than one battery.
a)
true
b)
false
15.
If the lights are on, the circuit is
a)
closed
b)
open
16.
If the lights are off, the circuit is
a)
closed
b)
open
17.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
18.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
19.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
20.
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
21.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
22.
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
23.
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
24.
True or False: All metals are attracted to magnet.
a)
True
b)
False
25.
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.
26.
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
27.
The plastic around the wire is
a)
conductor
b)
insulator
c)
decoration
28.
When the switch is closed, the light
a)
comes on
b)
stays off
c)
burns out
29.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
30.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
31.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
32.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
33.
When two magnets repel each other which poles are facing each other?
a)
North and South
b)
South and North
c)
North and North
d)
Positive and Negative
34.
When is an object negatively charged?
a)
When it gains electrons
b)
When it gains protons
c)
When it loses electrons
d)
When it has more neutrons
35.
What happens to the magnetic force as an object gets further away from the magnetic field?
a)
The force increases
b)
The force decreases
c)
The force stays the same
d)
There was no force to begin with
36.
What is electric discharge?
a)
The sudden and brief flow of protons
b)
The sudden and brief flow of neutrons
c)
Atoms crashing
d)
The sudden and brief flow of electrons
37.
What is a conductor?
a)
A material that stops electric current from flowing
b)
A material that allows electric current to flow easily
38.
Which is an example of a conductor?
a)
Glass
b)
Plastic
c)
Copper
d)
Wood
39.
What is an insulator?
a)
A material that DOES NOT allow electric current to flow
b)
A material that DOES allow electric current to flow
40.
Which is an example of an insulator?
a)
Rubber
b)
Copper
c)
Iron
d)
Steel
41.
What is static electricity?
a)
The buildup of neutrons
b)
Electricity flowing through a current
c)
Particles staying still
d)
The buildup of electric charges on an object
42.
What is current electricity?
a)
Current electricity involves a continuous flow of neutrons
b)
Current electricity involves a continuous flow of protons
c)
Current electricity is a single transfer of electrons
d)
Current electricity is a steady flow of electrons
43.
What is magnetism?
a)
An invisible force produced by certain metals
b)
A visible force produced by certain metals
c)
An invisible force produced by all metals
d)
A visible force produced by mixtures of metals
44.
What particles of an atom are attracted to each other?
a)
Protons and Electrons
b)
Electrons and Electrons
c)
Protons and Protons
d)
Electrons and Neutrons
45.
How are the domains of a magnet organized?
a)
The domains are very weak
b)
The domains are all mixed up
c)
The domains all point in the same direction
d)
There are no domains
46.
How is electricity a force?
a)
It is not a force
b)
Electrons are pushed through a circuit
c)
Protons are pushed through a circuit
d)
Neutrons are pushed through a circuit
47.
What is magnetism?
a)
A visible force produced by certain metals
b)
An invisible force produced by certain metals
c)
An invisible force produced by all metals
d)
A visible force produced by mixtures of metals
48.
How are the domains of an ordinary piece of metal organized?
a)
The domains are very strong
b)
The domains are all mixed up
c)
The domains all point in the same direction
d)
There is no such thing as domains
49.
How do you increase the strength of an electromagnet?
a)
Decrease the number of batteries and increase the number of coils
b)
Increase the electric current and decrease the batteries
c)
You cannot strengthen an electromagnet
d)
Increase the electric current and increase the number of coils
50.
How are electromagnets different from regular magnets?
a)
Their strength can be changed
b)
They can be turned on and off
c)
Their polarity can be reversed
d)
All choices are correct
51.
What will happen to the other bulbs in the circuit if one bulb goes out?
a)
The other bulbs will go out
b)
The other bulbs will get brighter
c)
The other bulbs will get dimmer
d)
They will flash on and off
52.
What will happen when a light bulb is removed from the circuit below?
a)
The remaining bulbs will go out
b)
The remaining bulbs will brighten
c)
The remaining bulbs will dim
d)
The brightness of the remaining bulbs will not change
53.
Rapid movement of electric charge from one place to another
a)
circuit
b)
static electricity
c)
electrical discharge
d)
series circuit
54.
an atom with a positive or negative charge
a)
conductor
b)
ion
c)
insulator
d)
parallel circuit
55.
the buildup of electric charges on an object
a)
electric current
b)
electrical discharge
c)
static electricity
d)
resistance
56.
materials that allow electrons to move through them easily
a)
insulators
b)
conductors
c)
direct circuit
d)
alternating circuit
57.
materials through which electrons CANNOT easily move
a)
insulators
b)
conductors
c)
alternating circuit
d)
direct circuit
58.
negatively charged subatomic particle
a)
proton
b)
electron
c)
neutron
d)
nucleus
59.
an unbroken (closed) path through which an electric current can flow
a)
electrical circuit
b)
direct current
c)
alternating current
d)
series circuit
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