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REVISION FOR ELETRICITY AND ELECTROMAGNETISM

Total questions: 150

Worksheet time: 3hrs 30mins

Name
Class
Date
1.
What type of energy is stored in an object due to its high position?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
2.
What type of energy is stored in an object that is compressed, stretched or bent?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
3.
What is produced on a balloon after it is rubbed with a woolen cloth?
a)
Electrostatic charges
b)
Electric current
c)
Voltage
d)
Resistance
4.
What happens to a plastic ruler after it is rubbed with a woollen cloth?
a)
Transfer of electrons
b)
Transfer of protons
c)
Transfer of neutrons
d)
Chemical reaction
5.
What instrument can be used to detect electrostatic charges?
a)
Electroscope
b)
Telescope
c)
Microscope
d)
Periscope
6.
Which of the following statements about charges is TRUE?
a)
Same charges repel while opposite charges attract
b)
Same charges repel and opposite charges also repel
c)
Same charges attract and opposite charges also attract
d)
Same charges attract while opposite charges repel
7.
What is the result of the force of attraction that exists between the positive charges on the ground and the negative charges in the clouds?
a)
Lightning
b)
Thunder
c)
Whirlpool
d)
Cyclone
8.
What can be used to produce electric charges at high voltages?
a)
Van de Graaff generator
b)
Resistor
c)
Ammeter
d)
Voltmeter
9.
What type of charges are usually produced on the dome of the Van de Graaff generator?
a)
Positive
b)
Negative
c)
Neutral
d)
It's impossible to detect
10.
What is an ammeter used to measure?
a)
Electric current
b)
Voltage
c)
Resistance
d)
Magnetism
11.
What is a voltmeter used to measure?
a)
Electric current
b)
Voltage
c)
Resistance
d)
Magnetism
12.
What is the unit for electric current?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
13.
What is the unit for voltage?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
14.
What is the unit for resistance?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
15.
Which factor does NOT affect the resistance in an electric circuit?
a)
Surface area of the conductor
b)
Length of the conductor
c)
Type of conductor
d)
Diameter of the conductor
16.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
17.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
18.
Wind turbines and windmills convert (or change) what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
19.
On a roller coaster, where is maximum (or most) potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
20.
When a soccer ball is on a field, the energy it has just before being kicked is called
a)
kinetic energy
b)
potential energy
c)
mechanical energy
d)
chemical energy
21.
The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —
a)
solar
b)
light
c)
heat
d)
mechanical
22.
Potential Energy is:
a)
The energy of motion
b)
always conserved
c)
The energy due to position
23.

Which of the following

components from the diagram

is not needed to produce a

magnetic field?

a)

The switch

b)

The wires

c)

The compass

d)

The battery

24.

Which of the components in the diagram will have a magnetic field around it once current electricity is flowing?

a)

The switch

b)

The wires

c)

The compass

d)

The battery

25.

Which component in the diagram is responsible for controlling the flow of electricity?

a)

The switch

b)

The wires

c)

The compass

d)

The battery

26.

How can the compass be used to show that a magnetic field has been produced?

a)

The needle will spin in circles until the electricity stops flowing.

b)

The needle will change from pointing North to pointing another direction.

c)

There will be no difference in the position of the needle whether or not electricity is flowing.

27.

Which component in the diagram is responsible for storing the energy?

a)

W

b)

X

c)

Y

d)

Z

28.

Which component in the diagram is referred to as the coil?

a)

W

b)

X

c)

Y

d)

Z

29.

Which component in the diagram is referred to as the core?

a)

W

b)

X

c)

Y

d)

Z

30.

Of which materials below could the paper clips be made?

a)

Steel

b)

Aluminum

c)

Copper

d)

Silver

31.

What would happen if one end of the wire were no longer touching the positive terminal?

a)

The paper clips would drop.

b)

Current electricity would no longer flow.

c)

The nail would no longer be magnetic.

d)

All of these are true.

32.

Which of the following shows the correct list of materials necessary to create a functioning circuit?

a)

Wires, battery, light bulb, completed path

b)

Completed path, nail, battery, wires

c)

Battery, wires, magnet, light bulb

33.

Which of the following is not evidence that energy is flowing?

a)

Motion

b)

Light

c)

Heat

d)

Closed Switch

34.

Of the following materials, which is not an insulator?

a)

Copper

b)

Plastic

c)

Tissue

d)

Cardboard

35.

What component in the circuit controls the flow of electricity?

a)

Bulbs A and B

b)

Wire

c)

Switch

d)

Battery

36.

What component in the circuit contains potential chemical energy?

a)

Bulbs A and B

b)

Wires

c)

Switch

d)

Battery

37.

Which of the following categories of materials are conductors?

a)

Metals

b)

Plastic

c)

Wood

d)

Rock

38.

Which of the following materials could you use to help you close a circuit?

a)

A plastic straw

b)

A piece of yarn

c)

A toothpick

d)

An iron nail

39.

If you were conducting an experiment, how many variables should you change in order to have a fair test?

a)

1

b)

2

c)

3

d)

4

40.

When a battery runs out of potential chemical energy, what should you do with it?

a)

Throw it in the garbage.

b)

Recycle it in hazardous waste

41.

Your science teacher believes you are smart and capable of acing the test tomorrow.

a)

True

b)

Absolutely

c)

You betcha

d)

All of these are TRUE!

42.

The strength of an electromagnet can be ____________ by reducing the number of turns on the wire coil.

a)

increased

b)

decreased

c)

expressed

d)

found

43.

An electric ___________ is used to change mechanical energy into electrical energy.

a)

motor

b)

generator

c)

switch

d)

battery

44.

Moving a wire through a ___________________ creates a current in the wire.

a)

steel ring

b)

magnetic field

c)

electrical field

d)

circular motion

45.

Current from the power line must have the voltage _________________ with a transformer before run to your home.

a)

decreased

b)

increased

c)

resolved

d)

resisted

46.

Type of magnet that only works in an electric field.

a)

permanent

b)

temporary

47.

Keeps magnetic properties for a long time.

a)

permanent magnet

b)

temporary magnet

48.

Can pick up metals made of iron, nickel or cobalt.

a)

permanent magnet

b)

temporary magnet

c)

both

49.

Contains a magnetic field.

a)

permanent magnet

b)

temporary magnet

c)

both

50.

Turning the blender to make a smoothie.

a)

chemical energy to mechanical energy

b)

electrical energy to mechanical energy

c)

mechanical energy to electrical energy

d)

electrical energy to light

51.

Using windmills to generate electricity.

a)

mechanical energy to electrical energy

b)

electrical energy to mechanical energy

c)

electrical energy to thermal energy

d)

chemical energy to electrical energy

52.

Using a hair dryer.

a)

turning mechanical energy into electrical energy

b)

turning electrical energy into light

c)

turning electrical energy into heat and mechanical energy

d)

turning chemical energy into electrical energy

53.

A battery...

a)

turning mechanical energy into electrical energy

b)

turning electrical energy into light

c)

turning electrical energy into mechanical energy

d)

turning chemical energy into electrical energy

54.

Running your car on gasoline

a)

turning electrical energy into mechanical energy

b)

turning mechanical energy into electrical energy

c)

turning chemical energy into mechanical energy

d)

turning electrical energy into light

55.

Which of these can be used to generate electricity?

a)

coal

b)

wind

c)

natural gas

d)

light

e)

all of them

56.

Changes electrical energy into mechanical energy

a)

motor

b)

generator

57.

Changes mechanical energy into electrical energy

a)

motor

b)

generator

58.

Transformers CANNOT:

a)

reduce voltage

b)

increase voltage

c)

change electrical energy into mechanical energy

59.

If all these electromagnets are operating with 12 volts which would be the most powerful?

a)

10 wire loops

b)

100 wire loops

c)

1000 wire loops

d)

1000 wire loops with an iron bolt in the center

60.

As a magnet gets colder what happens to the magnetic field?

a)

it increases strength

b)

it decreases strength

c)

nothing

61.
What type of energy is stored in an object due to its high position?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
62.
What type of energy is stored in an object that is compressed, stretched or bent?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
63.
What is produced on a balloon after it is rubbed with a woolen cloth?
a)
Electrostatic charges
b)
Electric current
c)
Voltage
d)
Resistance
64.
What happens to a plastic ruler after it is rubbed with a woollen cloth?
a)
Transfer of electrons
b)
Transfer of protons
c)
Transfer of neutrons
d)
Chemical reaction
65.
What instrument can be used to detect electrostatic charges?
a)
Electroscope
b)
Telescope
c)
Microscope
d)
Periscope
66.
Which of the following statements about charges is TRUE?
a)
Same charges repel while opposite charges attract
b)
Same charges repel and opposite charges also repel
c)
Same charges attract and opposite charges also attract
d)
Same charges attract while opposite charges repel
67.
What is the result of the force of attraction that exists between the positive charges on the ground and the negative charges in the clouds?
a)
Lightning
b)
Thunder
c)
Whirlpool
d)
Cyclone
68.
What can be used to produce electric charges at high voltages?
a)
Van de Graaff generator
b)
Resistor
c)
Ammeter
d)
Voltmeter
69.
What type of charges are usually produced on the dome of the Van de Graaff generator?
a)
Positive
b)
Negative
c)
Neutral
d)
It's impossible to detect
70.
What is an ammeter used to measure?
a)
Electric current
b)
Voltage
c)
Resistance
d)
Magnetism
71.
What is a voltmeter used to measure?
a)
Electric current
b)
Voltage
c)
Resistance
d)
Magnetism
72.
What is the unit for electric current?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
73.
What is the unit for voltage?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
74.
Which factor does NOT affect the resistance in an electric circuit?
a)
Surface area of the conductor
b)
Length of the conductor
c)
Type of conductor
d)
Diameter of the conductor
75.
What is the direction of a magnetic field?
a)
From the north pole to the south pole
b)
From the south pole to the north pole
c)
From the east pole to the west pole
d)
From the west pole to the east pole
76.
Which of the following statements about magnets is TRUE?
a)
Same poles repel while opposite poles attract
b)
Same poles repel and opposite poles also repel
c)
Same poles attract and opposite poles also attract
d)
Same poles attract while opposite poles repel
77.
What direction will a compass point to when hung freely?
a)
North
b)
South
c)
East
d)
West
78.
What rule is used for determining the direction of the magnetic field based on the direction of the current in a straight conductor?
a)
Right-hand grip rule
b)
Left-hand grip rule
c)
Fleming's left-hand rule
d)
Fleming's right-hand rule
79.
Which of the following devices does not used an electromagnet?
a)
Refridgerators
b)
Cranes
c)
Electric bells
d)
Credit cards
80.

An object that attracts iron and steel is a

a)

nail

b)

magnet

c)

galvanometer

d)

battery

81.

The strongest parts of the magnet are ...

a)

fronts

b)

backs

c)

poles

d)

middle

82.

What would happen is a north pole of a magnet came close to a north pole of another magnet?

a)

they would be attracted to each other

b)

they would be repelled from each other

83.

The area around a magnet is called the .....

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

84.
A north pole and a south pole will attract.
a)
True
b)
False
85.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
86.

To make this electromagnet stronger you could:

a)

use less wire

b)

have fewer wire coils around the nail

c)

have more wire coils around the nail

d)

use a plastic core

87.
What is true about electricity and magnetic fields?
a)
Electricity is needed to create any magnet.
b)
Electricity always creates a magnetic field.
c)
Electricity is stronger than a magnetic field.
d)
Electricity prevents magnetic fields from occurring.
88.
Are the magnetic field lines in the picture correct?
a)
Yes, because they point from north to south.
b)
No, because they point from north to south (they're supposed to go the other way).
c)
Yes, because the North pole is on the left in all pictures.
d)
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
89.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
90.
Electric current flowing through a wire produces
a)
static electricity
b)
an open circuit
c)
a permanent magnet
d)
a magnetic field
91.

Which one represents the magnetic field lines of magnets repelling?

a)

A

b)

B

92.

Which of the following is not a good conductor?

a)

Copper

b)

Silver

c)

Aluminium

d)

Plastic

93.

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

a)

attract, repel

b)

repel, repel

c)

attract, attract

d)

repel, attract

94.

What would happen with the magnets in the picture above?

a)

They would repel

b)

Nothing

c)

They would attract

d)

They would repel and then attract

95.
A device that converts electrical energy into mechanical energy
a)
A. electromagnet
b)
B. electromagnetic induction
c)
C. electric motor
d)
D. electromagnetism
96.
The process of creating a current in a circuit by changing a magnetic field
a)
A. electric generator
b)
B. electric motor
c)
C. electromagnetic induction
d)
D. magnet
97.
Which of the following are two kinds of magnets?
a)
A. atoms, domains
b)
B. magnetic fields, magnetic poles
c)
C. ferromagnets, electromagnets
d)
D. magnesia magnets, magnetite magnets
98.

What is responsible for creating a magnetic field around Earth?

a)

Earth's crust

b)

Earth's iron core

c)

Earth's mantle

d)

Earth's atmosphere

99.

What is the difference between a conductor and insulator?

a)

conductor: allows electricity to flow easily.

insulator:does not allow electricity to flow easily

b)

conductor: does not allow electricity to flow easily

insulator: allows electricity to flow easily

100.

All permanent magnets have two

a)

magnetic charges

b)

magnetic fields

c)

magnetic needles

d)

magnetic poles

101.

Like poles on a permanent magnet will

a)

attract each other

b)

repel each other

c)

always interact

d)

point in the same direction

102.

The magnetic field lines around a bar magnet

a)

are perfectly straight

b)

are only perpendicular to the magnet

c)

spread out from one pole and curve around to the other

d)

cross back and forth over one another

103.

Which poles on the earth change?

a)

the North and South

b)

the magnetic poles

c)

the geographic poles

d)

the telephone poles

104.

What is known as the difference between the earth's magnetic pole and its geographic pole?

a)

magnetic declination

b)

magnetic difference

c)

geographic decline

d)

geographic increase

105.

As earth's magnetic poles move what happens to the magnetic declination of a given location

a)

it will always remain constant

b)

it will return to zero

c)

it will change

d)

it will always double

106.

Which way will NOT increase the strength of the magnetic field of an electromagent

a)

increasing the current

b)

using a stronger ferromagnetic core

c)

winding the coils closer together

d)

decreasing the number of loops

107.

What type of materials are needed to create an electromagnet?

a)

battery, light bulb, plastic straw

b)

battery, coil of wire, iron core

c)

generator, iron core, switch

d)

switch, source of electricity, compass

108.

Moving a permanent magnet through a coil of wire will

a)

demagnetize the magnet

b)

the wire will become an electromagnet

c)

the magnet will become electrified

d)

a current will be generated in the wire

109.

What type of current is produced in a battery

a)

induced

b)

magnetic

c)

alternating

d)

direct

110.

When current running through a wire is placed in the field of a permanent magnet,

a)

solar energy is transformed into light

b)

electrical energy is transformed into sound

c)

solar energy is transformed into mechanical energy

d)

electrical energy is transformed into mechanical energy

111.

What type of equipment is used to measure the current induced when a wire passes through a magnetic field?

a)

a transformer

b)

a galvanometer

c)

a generator

d)

an insulated wire

112.

What do electric generators do

a)

transform mechanical energy to electrical energy

b)

transform mechanical energy to sound

c)

transform electrical energy to mechanical energy

d)

transform electrical energy to potential energy

113.

To reverse current direction in a motor the conducted current goes

a)

through the commutator to the armature

b)

through the armature

c)

through the brushes to the commutator

d)

in the direction of rotation

114.

A plant generating electric current

a)

transmits alternating current at high voltages, but is used at low voltages

b)

transmits direct current at high voltages, but is used at low voltages

c)

transmits alternating current at low voltages, but used at high voltages

d)

transmits direct current at low voltages, but used at high voltages

115.

What type of device converts mechanical energy into electrical energy?

a)

solenoid

b)

electric motor

c)

transformer

d)

generator

116.

What type of device converts electrical energy into mechanical energy

a)

electric motors

b)

generator

c)

transformers

d)

galvanometer

117.

What type of device can increase and decrease voltage?

a)

Generators

b)

Transformers

c)

Galvanometers

d)

Electric motors

118.

What causes an object to be magnetized?

a)

made of metal

b)

atoms are aligned

c)

atoms point every direction

119.

Here is a simple electromagnet. How could you make the magnetic field STRONGER?

a)

Add more coils of wire around the nail

b)

Use a smaller battery

c)

Reverse the flow of electricity

d)

Decrease the coils in the solenoid

120.

EVERY magnet is surrounded by ____________________.

a)

an invisible magnetic field

b)

an electrical current

c)

a solenoid

121.

What kind of magnet can be turned on and off?

a)

a refrigerator magnet

b)

an electromagnet

c)

magnetite (found in nature)

d)

a permanent magnet

122.

When two magnetic North poles are brought close to each other, they will

a)

attract

b)

repel

c)

create static electricity

d)

cancel each other out

123.
When two magnetic South poles are brought close to each other, they will
a)
attract
b)
repel
c)
create sparks
d)
cancel each other out
124.
When a magnetic South pole is brought close to a magnetic North pole, the magnets will
a)
attract
b)
repel
c)
create sparks
d)
cancel each other out
125.

Which of the following is NOT magnetic?

a)

aluminum

b)

iron

c)

cobalt

d)

nickel

126.

In the diagram, an electric motor is pictured. The purpose of an electric motor is

a)

to create electricity (using a magnet)

b)

to create motion (using electricity)

c)

to create a magnet (using motion)

127.

A magnetic pole is the location on a magnet where the magnetic field is the..

a)

Strongest

b)

Weakest

128.

Electromagnetic Induction uses electricity to make a magnetic field (using a solenoid and iron core).

a)

True

b)

False

129.

Increasing the number of loops in a solenoid will strengthen the magnetic field

a)

True

b)

False

130.

Magnetic fields are invisible, but can be detected using a compass

a)

True

b)

False

131.

If you cut this magnet in half, you end up with

a)
b)
132.

Moving a bar magnet through a coil of wires can be used to create

a)

a magnetic field

b)

electricity

c)

an electric motor

133.

Which title best describes this diagram?

a)

A Magnet

b)

An Electromagnet

c)

An Electric Motor

d)

An Electric Generator

134.

Describe the diagram

a)

magnetic

b)

not magnetic

135.

How does an electric generator work?

a)

It converts motion (mechanical energy) into electricity using a magnet

b)

It converts electricity (electrical energy) into a magnetic field

c)

It converts a magnetic field into motion (mechanical energy)

136.

A coil of wire (attached to an electrical source) is known as

a)

a generator

b)

a solenoid

c)

a motor

d)

a magnetic pole

137.

All magnets have a North and South pole

a)

True

b)

False

138.

The biggest difference between a permanent bar magnet and an electromagnet is

a)

an electromagnet will always be more powerful than a bar magnet

b)

a bar magnet requires electricity to create a magnetic field

c)

an electromagnet requires electricity to align the domains

d)

a bar magnet has more magnetic poles than an electromagnet

139.
What type of energy is stored in an object due to its high position?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
140.
What type of energy is stored in an object that is compressed, stretched or bent?
a)
Gravitational potential energy
b)
Elastic potential energy
c)
Kinetic energy
d)
Electrical energy
141.
What is produced on a balloon after it is rubbed with a woolen cloth?
a)
Electrostatic charges
b)
Electric current
c)
Voltage
d)
Resistance
142.
What is a voltmeter used to measure?
a)
Electric current
b)
Voltage
c)
Resistance
d)
Magnetism
143.
What is the unit for electric current?
a)
Ampere
b)
Volt
c)
Ohm
d)
Tesla
144.

what is the energy change for a burning candle?

a)

chemical energy → light energy

b)

chemical energy → heat energy + kinetic energy

c)

light energy → heat energy + chemical energy

d)

chemical energy → light energy + heat energy

145.

what is the name of negative charge?

a)

neutron

b)

electron

c)

proton

d)

nucleus

146.

what is the name of negative charge?

a)

neutron

b)

electron

c)

proton

d)

nucleus

147.

what is the name of this tool?

a)

insulator

b)

dosimeter

c)

electroscope

d)

microscope

148.

energy __________ be created and destroyed.

a)

can

b)

cannot

149.

which one is renewable energy?

(there is more than 1 answer)

a)

fossil fuel

b)

water

c)

solar

d)

radioactive substances

e)

wind

150.

what is the energy change for a burning candle?

a)

chemical energy → light energy

b)

chemical energy → heat energy + kinetic energy

c)

light energy → heat energy + chemical energy

d)

chemical energy → light energy + heat energy

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