Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Electromagnetic field

Total questions: 71

Worksheet time: 5hrs 1mins

Name
Class
Date
1.
What kind of magnet can be turned on and off? (Man-made magnet)
a)
refrigerator magnet
b)
electromagnet
c)
magnetite
d)
iron
2.
If you wrap more coils around an electromagnet, it will become...(think about the Webquest.)
a)
brighter
b)
stronger
c)
weaker
d)
invisible
3.
How do like poles interact with each other? (north to north)
a)
They repel each other.
b)
They attract each other.
c)
Throw a toaster into a bathtub.
d)
No relationship.
4.
Choose the best option to complete this gap:
A magnetic field is the ________ around a magnet in which the magnetic force acts.
a)
pole
b)
electron
c)
area
d)
iron
5.
Opposite poles _____ .
a)
attract
b)
push away
c)
are balanced
d)
transfer electrons
6.
A material in which electrons are not able to move easily 
a)
Circuit 
b)
Insulator 
c)
Resistance 
d)
Conductor
7.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
8.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
9.

The relationship between electricity and magnetism is called

a)

solenoid

b)

transformer

c)

electromagnetism

d)

electromagnet

10.

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

a)

attract, repel

b)

repel, repel

c)

attract, attract

d)

repel, attract

11.

What happens if you cut a magnet in half?

a)

Nothing

b)

The magnets repel

c)

There will be two magnets

12.

The picture above is an example of what?

a)

Magnetic field

b)

Electric field

c)

Repulsion

d)

Attraction

13.

What does the magnetic field look like on a straight wire?

a)
b)
c)
d)
14.
A turbine is used to ________ the magnet in a generator.
a)
rotate
b)
electrify
c)
attract
d)
repel
15.
Voltage can be induced in a wire by
a)
a. moving the wire near a magnet.
b)
b. moving a magnet near the wire.
c)
c. changing the current in a nearby wire.
d)
d. all of these
16.
What would happen if I move a bar magnet in and out of a coil of copper wire?
a)
Electric current would disappear 
b)
The magnet would explode 
c)
Electric current will flow through the wire
d)
It would produce a gravitational field
17.
A magnet can move in a coil of wire to produce electricity in which system?
a)
Generator
b)
Motor
c)
Magnet
d)
Transformer
18.

What type of device is being shown?

a)

Electromagnet

b)

Electric motor

c)

Electric generator

d)

Electromagnetic Induction

19.

What type of process is shown?

a)

Electromagnet

b)

Electric motor

c)

Electric generator

d)

Electromagnetic induction

20.

What type of device is shown?

a)

Electromagnet

b)

Electric motor

c)

Electric generator

d)

Electromagnetic induction

21.

What happens to the strength of a magnetic field as you move away from the magnet?

a)

The strength of the magnetic field increases.

b)

The strength of the magnetic field doesn't change.

c)

The strength of the magnetic field is doubled.

d)

The strength of the magnetic field decreases.

22.

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

a)

attract, repel

b)

repel, repel

c)

attract, attract

d)

repel, attract

23.
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
24.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
25.

Which of the following is not a good conductor?

a)

Copper

b)

Silver

c)

Aluminum

d)

Plastic

26.

What happens when an electric current flows through a wire?

a)

The wire begins to spin.

b)

Nothing happens.

c)

A field of gravity is created around the wire.

d)

A magnetic field is created around the wire.

27.

What does this image show?

a)

Parallel circuit

b)

Series circuit

c)

Magnet

d)

Electromagnet

28.

The area of magnetic force around a magnet is known as its ____________.

a)

magnetism

b)

magnetic current

c)

magnetic field

d)

electric current

29.

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

a)

decrease

b)

increase

c)

not affect

30.

What type of core is best for electromagnets?

a)

Steel

b)

Iron

c)

Plastic

d)

Copper

31.

As the strength of a magnetic field increases, the ability to attract metal objects ____________.

a)

increases

b)

decreases

c)

stays the same

32.

What conclusion can you draw from this graph?

a)

As current increases, magnetic strength decreases.

b)

As current increases, magnetic strength increases.

c)

As current decreases, magnetic strength increases.

d)

There is no relationship between current and magnetic strength.

33.
The center of a bar magnet is the strongest
a)
True
b)
False
34.
The lines on this image are called...
a)
magnetic field lines
b)
iron fillings
c)
graphite lines
d)
none of these
35.
Magnetic poles and electric charges are similar in that...
a)
like poles repel and opposites attract
b)
magnetic force is equal to electric force
36.
If the end of an unknown magnet sticks to a magnet pole labeled "North" the unknown end must be...
a)
North
b)
South
c)
East 
d)
West
37.
Electricity can be used to create a magnet
a)
True
b)
False
38.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these
39.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
40.
Which object would a magnet attract?
a)
a glass bottle
b)
a piece of paper
c)
a metal paper clip
compass
d)
a rubber eraser
magnetic field
41.
True or False: All metals are attracted to magnet.
a)
True
b)
False
42.
A device that uses a free-moving magnetic needle to show direction is a:
a)
Ruler
b)
magnet
c)
compass
d)
magnetic field
43.

The Earth produces its own ________ field.

a)

spectrum

b)

electric

c)

magnetic

d)

progressive

44.

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

a)

on, off

b)

positive, negative

c)

north, south

d)

on, negative

45.

Magnetism is generated by moving __________.

El magnetismo se genera al mover _____________.

a)

protons.

b)

electrons.

c)

neutrons.

d)

elements.

46.
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
47.
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
48.
Electric motors are devices that convert _____ energy into  _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
49.

How can a wire become magnetic?

a)

point it north

b)

add a resistor

c)

heat it up

d)

run a current through it

50.

What device takes in mechanical energy and produces electricity?

a)

motor

b)

generator

c)

electromagnet

d)

battery

51.

Which of the following principles explains how an electric motor works?

a)

Magnetic force

b)

Magnetism

c)

Electrolysis

d)

Electromagnetism

52.

Which of the following is a device that converts electrical energy into mechanical energy?

a)

Vacuum cleaner

b)

Bicycle

c)

Weighing scale

d)

All of the choices

53.

Which two forces are required to operate with generators and electric motors?

a)

Electric and magnetic

b)

Electric and thermal

c)

Magnetic and Radiant

d)

Magnetic and thermal

54.

Which of these kitchen appliances does NOT have an electric motor?

a)

Water filter

b)

Refrigerator

c)

Food proccessor

d)

All of the above

55.

The (a)   supplies the electric current into the coil and it gets converted into motion.

56.

A compass needle responds to a magnetic field, because the compass needle is a

a)

A. generator

b)

B. motor

c)

C. magnet

d)

D. transformer

57.

Electric current is measured in ____________.

a)

Newtons (N)

b)

Amperes (A)

c)

Hertz (Hz)

d)

Volts (V)

58.

A _______________ is a current-carrying coil of wire with lots of loops.

a)

magnet

b)

electromagnet

c)

solenoid

d)

compass

59.

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

a)

decrease

b)

increase

c)

not affect

60.

What three minerals are attracted to a magnet?

a)

Gold, copper, cobalt

b)

Cobalt, aluminum, silver

c)

Iron, copper, aluminum

d)

Iron, nickel, cobalt

61.
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
62.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
63.
What is created when a wire moves between the poles of a magnet?
a)
A. a ferromagnet
b)
B. a solenoid
c)
C. an electromagnet
d)
D. an electric current
64.
According to the Right Hand Rule, where is the magnetic field generated around a current-carrying wire?
a)
Perpendicular to the wire
b)
Parallel to the wire
65.
What can demagnetize a magnet?
a)
A. high altitudes
b)
B. high temperatures
c)
C. low altitudes 
d)
D. low temperatures
66.

What happens if you cut a magnet in half?

a)

Nothing

b)

The magnets repel

c)

There will be two magnets

67.

How can you increase the magnetic field strength in an electromagnet?

a)

Increase the number of coils.

b)

increase the voltage

c)

increase the current by reducing the resistance of the coil

d)

all of the above

68.

How can you decrease the magnetic field strength in an electromagnet?

a)

Increase the number of coils.

b)

increase the voltage

c)

decrease the current by increasing the resistance of the coil

d)

all of the above

69.

What did Oersted discover about Induction?

a)

That a changing magnetic field induces a current in a conductor.

b)

That electricity and magnetism were related when he noticed a current carrying conductor deflected the compass of a needle.

c)

That the Earth's magnetosphere deflected charged particles from the sun known as solar winds.

d)

That alternating current could be manipulated with transformers.

70.

If you brought an unknown pole of a magnet near a North magnetic pole and they repel what is the unknown pole?

a)

North

b)

South

c)

Neutral

d)

not enough information

71.

What do we know about Earth's Magnetosphere (magnetic field)?

a)

It is likely caused my the molten iron core of the Earth.

b)

It protects us from solar winds.

c)

It causes the auroras.

d)

all of the above.

Similar Resources on Wayground

Newton's Laws and Applications

73 questions

Newton's Laws and Applications

quiz

Worksheet

•

9th - 12th Grade

Properties of Matter

69 questions

Properties of Matter

quiz

Worksheet

•

5th Grade - University

Direct Current DP024

71 questions

Direct Current DP024

quiz

Worksheet

•

9th - 12th Grade

Con. E 1 Review

70 questions

Con. E 1 Review

quiz

Worksheet

•

8th - 11th Grade

Physics Ch 4 Forces & the Laws of Motion

67 questions

Physics Ch 4 Forces & the Laws of Motion

quiz

Worksheet

•

11th - 12th Grade

The Ultimate Midterm Review Game and Some Other Schtuff

76 questions

The Ultimate Midterm Review Game and Some Other Schtuff

quiz

Worksheet

•

8th - 12th Grade

Heat- Physics

73 questions

Heat- Physics

quiz

Worksheet

•

11th Grade

Electronics form 5

66 questions

Electronics form 5

quiz

Worksheet

•

11th Grade