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Physics: Magnetism and Electricity

Total questions: 137

Worksheet time: 3hrs 25mins

Name
Class
Date
1.

How many poles does a magnet have?

a)

1 pole

b)

3 poles

c)

2 poles

d)

o pole

2.

When a bar magnet is brought near iron dust, most of the dust sticks?

a)

near the middle

b)

equally everywhere

c)

near two ends

d)

at the middle and ends

3.

when a magnet is placed on a plastic plate with common pins spread on it , then_______

a)

pins stick all around the magnet

b)

pins stick at the middle of the magnet

c)

pins stick at the end of the magnet

d)

none of these

4.

like poles of a magnet attract each other and unlike poles of a magnet repel each other.

a)

true

b)

false

5.

Iron is used to make

a)

Permanent Magnet

b)

Temporary Magnet

6.

Which image represents an attraction between two magnetic poles?

a)
b)
c)
d)
7.

Which image represent two magnets repelling each other?

a)
b)
c)
d)
8.

Which type of field is represented in this image?

a)

Gravitational Field

b)

Geothermal Field

c)

Magnetic Field

d)

Electrical Field

9.

What type of metals can have magnetic properties?

a)

Cobalt, Aluminium, Iron, Nickel, Copper

b)

Cobalt, Iron, Nickel, Aluminum

c)

Titanium Alloy, Platinum, Silver, Cobalt

d)

Iron, Nickel, Cobalt

10.

How do you increase a magnetic force between two objects?

a)

Increase Mass

b)

Decrease Mass

c)

Decrease the Distance

d)

Increase the Distance

e)

Change state of Matter

11.

Objects with the same charge will ______________ each other.

a)

Repel

b)

Attract

c)

balance each other out

d)

remain neutral

12.

Objects with opposite charges will ______________ each other.

a)

Attract

b)

Repel

c)

Balance each other out

d)

Remain neutral

13.

This image represents a material that is not magnetized? Choose all that are correct.

a)
b)
c)
d)
14.

This image represents a material that is magnetized? Choose all that are correct.

a)
b)
c)
d)
15.

True or False: An electromagnet's magnetism can not be turned off with electricity.

a)

True

b)

False

16.

What word best describes bar magnets?

a)

Electromagnets

b)

Permanent

c)

Temporary

17.

Which two of these are not magnetic materials? Tick two.

a)

copper

b)

steel

c)

iron

d)

aluminum

18.

Specifically in which direction do the lines run in a magnetic field diagram?

a)

pole to pole

b)

south to north

c)

north to south

19.

Where is the strongest magnetic field around a bar magnet?

a)

above and below

b)

near the poles

c)

in the middle

d)

on the north pole

20.

The 3 parts that an electromagnet consist of are:

a)

battery

b)

magnet

c)

wire

d)

core (iron nail)

e)

light bulb

21.
Magnets can interact without touching.
a)
True
b)
False
22.

The area or lines of magnetic force surrounding a magnet is known as its _____________.

a)

magnetic field

b)

magnetic poles

c)

magnetic fan lines

d)

magnetic tan lines

23.

True or False: All metals stick to magnets.

a)

True

b)

False

24.

Which if these is a way to make an electromagnet stronger?

a)

putting a switch in the electrical circuit

b)

replacing the iron core with a copper core

c)

replacing the copper wire with plastic wire

d)

wrapping the wire around the iron core more times

25.

The _ the current in an electromagnet has, the stronger the magnetic field.

a)

less

b)

greater

c)

same

26.

As the distance is increased from the magnetic field, the magnetic force becomes _.

a)

stronger

b)

remains the same

c)

weaker

d)

does not change

27.

As electricity flows through a wire, what is created around it?

a)

lightning

b)

magnetic field

c)

super nova

d)

explosion

28.

What will the magnets in the picture do?

a)

Attract each other

b)

Repel each other

c)

Both attract and repel

d)

Neither attract nor repel

29.

A compass needle shows us the magnetic field of

a)

the sun

b)

Earth

c)

the moon

d)

a magnet that is near by

30.

Earth has a magnetic field that is similar to a bar magnet's magnetic field.

a)

true

b)

false

31.

Electronic devices create magnetic fields because they

a)

are magnets

b)

are compasses

c)

have moving particles with electric charge

32.

How can you test to see if there is a current running through a wire?

a)

listen carefully to see if you hear a buzzing sound

b)

place several compasses around the wire

c)

place several batteries around the wire

33.

What THREE ways are electromagnets different from permanent magnets?

a)

they can be turned off and on

b)

they can increase in strength by increasing the current in the wire

c)

they are smaller in size

d)

they can change which is the north and south pole

34.

When _______________ travels through a

conductor, a magnetic field is created

a)

current

b)

a magnetic field

c)

neutrons

35.

Electric currents produce _____________

a)

electron clouds

b)

magnetic fields

c)

sound waves

36.

In magnets and electromagnets, similar poles attract

a)

true

b)

false

37.

Electrons which collect at the negative end of the battery, can flow to the positive end through a ___________________

a)

wire

b)

electron cloud

c)

magnet

38.

To determine magnetic field direction around straight wire conductor we used

a)

Right hand grip rule

b)

Left hand grip rule

39.

What is pole X and Y?

a)

X : North

Y : South

b)

X : South

Y : North

40.

Thumb shows the direction of

a)

Magnetic field

b)

Current

41.

Diagram shows meyhod to determine magnetic pole around a

a)

Straight wire

b)

Coil

c)

Solenoid

42.

When number of turns in solenoid increase, electromagnetic strength ...

a)

Increase

b)

Decrease

43.

When more current flows in solenoid, strength of magnetic field ...

a)

Decrease

b)

Increase

44.

What would happen if you took one end of the wire off the battery?

a)

The nail will be a magnet.

b)

The nail would no longer be a magnet

c)

Nothing will happened.

d)

The nail will heats up.

45.

Electric currents produce _____________

a)

electron clouds

b)

magnetic fields

c)

sound waves

46.

How can the strength of an electromagnet be increased? (mark all that apply)

a)

increase the current flowing through the coil

b)

increase the number of coils

c)

add an amplifier to it

d)

put iron core inside the coil

47.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
48.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
49.
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.
50.
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
d)
excited, hair, apple
51.

How is a magnetic field shown?

a)

Field lines with arrows

b)

Compasses pointing north

c)

By repelling magnets

d)

By attracting magnets

52.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
53.
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.
54.

This is an object made from a battery, a nail and some wire. What will happen if you touch a metal paper clip to the nail?

a)

The wires will melt.

b)

The battery will spark.

c)

The nail will give you a shock.

d)

The paper clip will stick to the nail.

55.

What type of particle is a Electron ?

a)

Positive

b)

Negative

56.

Which of the following statements is true about electricity?

a)

Electricity is the flow of negatively charged particles called electrons.

b)

Electricity is the flow of negatively charged particles called protons.

c)

Electricity is the flow of negatively charged particles called neutrons.

d)

Electricity is the flow of neutrally charged particles called neutrons.

57.

In an electrical generator, the energy transformation begins as ___________ and becomes ____________.

a)

mechanical; electrical

b)

electrical; mechanical

c)

electrical; chemical

d)

mechanical; chemical

58.
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
59.
Two like charges
a)
 neutralize each other.
b)
repel each other. 
c)
must be neutrons. 
d)
attract each other.
60.
When a balloon is rubbed on clothes it acquires a charge by ___________
a)
Induction
b)
reduction
c)
friction 
d)
concuction
61.
Which of the following is not a good insulator?
a)
Copper
b)
Glass
c)
rubber
d)
wool
62.
What is the name of the particle that is being transferred?
a)
Proton
b)
Neutron
c)
Electron
d)
Positron
63.
Insulators are different than conductors in that insulators ____.
a)
do not contain electrons or protons 
b)
 do not contain any charge
c)
have a weaker affinity for electrons 
d)
do not allow charge to freely move 
64.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
65.
A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod
a)
gains electrons
b)
loses electrons
c)
gains protons
d)
loses protons
66.

What types of charges attract?

a)

Positive and Positive

b)

Positive and Neutral

c)

Negative and Neutral

d)

Positive and Negative

67.

The accumulation of excess electric charge on an object is called

a)

Static electricity

b)

Electric discharge

c)

Resistance

d)

Circuit

68.
If you replace the paper clip with a plastic spoon, what happens?
a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no change
69.
A series circuit has ____ path(s) that the electric current can take. 
a)
One
b)
Two 
c)
Three 
d)
Four
70.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
71.
What is a Parallel circuit? 
a)
Has only one path 
b)
Has more than one path 
c)
Allows energy to travel through easily 
d)
Has only one light bulb
72.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
73.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
74.

Why electrical wiring usually are covered with a layer of plastic?

a)

To make it look pretty

b)

To help electricity flow along the wire

c)

To make it safe

d)

To add more energy

75.

Why is electrical wiring usually made from copper?

a)

Because copper is shiny

b)

Because copper conducts electricity

c)

Because copper is not magnetic

d)

Because copper insulate electricity

76.

1. Which switch or switches must be closed to make the lamps light?

a)

Only switch 1

b)

Only switch 1

c)

Switches 1 and 2

d)

Switches 1 , 2 and 3

77.

What use symbols to represent the parts of a circuit, including a source of electrical energy and devices that are run by the electrical energy?

a)

Circuits Diagrams

b)

Ciscuits Drawings

c)

Circuits Pictures

d)

Circuits Lines

78.

In this kind of circuit, If one element stops functioning in a series circuit, none of the elements can operate.

a)

Series Circuit

b)

Parallel Circuit

c)

Alternating Circuit

d)

Direct Circuit

79.

The rate which electrical energy is transform into a different kind of energy is called ....

a)

Series Circuit

b)

Amperes

c)

Electric Power

d)

Ohms

80.

Electric power can be calculated by multiplying ______________ and _________________.

a)

Voltage and resistance

b)

Voltage and current

c)

Electric usage and voltage

d)

Electric Energy and Time

81.

Electrical energy is calculating by multiplying _________________ and ________________.

a)

Electric Power and time

b)

Voltage and time

c)

Resistance and time

d)

Current and time

82.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
83.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
 can still light up
c)
 will go out
d)
of the light bulbs burn out also
84.
How should you put in an Ammeter?
a)
In Parallel
b)
In Series
85.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
86.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
87.
A voltmeter should be placed ........... in a circuit
a)
in parallel
b)
in series
c)
in order
d)
upside down
88.
What would the voltmeter read
a)
1V
b)
2V
c)
3V
d)
6V
89.
Which Voltmeter will give the lowest reading?
a)
V1
b)
V2
c)
V3
90.

A student uses a length of wire as a resistor. He makes a second resistor from the same material.

To be certain of making a second resistor of higher resistance, he should use a piece of wire that is:

a)

longer and thicker.

b)

longer and thinner.

c)

shorter and thicker.

d)

shorter and thinner.

91.

The circuit shown contains a battery, a 6.0 Ω resistor and two meters X and Y.


One meter records current and one meter records potential difference.

a)

meter X : 2.0 A

meter Y : 12.0 V

b)

meter X : 2.0 V

meter Y : 1.0 A

c)

meter X : 12.0 A

meter Y : 2.0 V

d)

meter X : 12.0 V

meter Y : 2.0 A

92.

Which equation can be used to calculate the resistance R of a resistor?

a)

V = I / R

b)

I = V x R

c)

R = V x I

d)

V = I x R

93.

Which symbols are used for the units of current and of resistance?

a)

A

b)

B

c)

C

d)

D

94.

The resistance of a component in a circuit is found using an ammeter and a voltmeter.


How are the ammeter and the voltmeter connected?

a)

the voltmeter and ammeter in parallel with the component

b)

the voltmeter and ammeter in series with the component

c)

the voltmeter in parallel with the component and the ammeter in series with the component

d)

the voltmeter in series with the component and the ammeter in parallel with the component

95.

Electrons exist throughout the wire even when current is not flowing.

a)

true

b)

false

c)

not sure

96.

Current is...

a)

...measured in volts with an voltmeter

b)

...measured in volts with an ammeter

c)

...measured in Amps with an voltmeter

d)

...measured in Amps with an ammeter

97.

Which answer best describes the voltage of a battery?

a)

how long it will last for

b)

how strongly it can push the current

c)

how fast the current will be

d)

how large the battery is

98.

What is the ammeter measuring?

a)

the size of the current flowing through the bulb

b)

the brightness of the bulb

c)

the voltage of the battery

d)

the size of the current that the bulb uses up

99.

Which is the correct description of how current flows in a circuit?

a)
b)
c)
d)
100.

Which bulb will be the brightest and why?

a)

A because it is designed for torches

b)

B because it has the most electricity in it

c)

C because it has the largest voltage so it pushes the biggest current

d)

they are all the same because the bulbs are the same

101.

A circuit consists of 2 batteries and a bulb.

The bulb is lit very brightly.


What will happen to the brightness of the bulb and why?

a)

the bulb gets brighter because there is less resistance

b)

the bulb gets dimmer because there is a lower voltage, so it pushes a smaller current round

c)

the bulb gets dimmer because there is less energy than before

102.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
103.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
104.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
105.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
106.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
107.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
108.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
109.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
110.
How do you calculate resistance?
a)
Voltage X Current
b)
Current ÷ Voltage
c)
Voltage ÷ Current
d)
Current X Amps
111.

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

a)

60Ω

b)

120Ω

c)

180Ω

d)

240Ω

112.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
113.

If the battery produced 12.6 Volts, what would be the current flow be for a 6 Ohm resistor?

a)

2.1 Amps

b)

2.4 Amps

c)

1.71 Amps

d)

15 Amps

114.

If the Voltage is increased and the resistance stays the same, Current will

a)

Increase

b)

Decrease

c)

Stay the same

d)

none of these

115.

If the Voltage stays the same and Resistance is increased, Current will

a)

Increase

b)

Decrease

c)

Stay the same

d)

none of these

116.

What is the advantage of having a safety switch or fuse in the electric circuits of your house?

a)

Safety switches break the circuit when there is no fault

b)

Safety switches switch the electrical current

c)

It prevents the circuit from overheating and starting the fire

d)

Fuses are fused together with electrical wires

117.

The diagram shows a circuit including a lamp, an electric bell and three switches S1, S2 and S3. The lamp and bell are not faulty.


The bell is ringing but the lamp is not lit. Which switches are closed?

a)

S1 only

b)

S1 and S2 only

c)

S1 and S3 only

d)

S1, S2 and S3

118.
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.
119.

How does a voltmeter meter is added in the circuit?

a)

Series

b)

Parallel

120.

How does an ammeter is added in the circuit?

a)

Series

b)

Parallel

121.

What does a voltmeter measure?

a)

Current

b)

Voltage

c)

Resistance

122.

What does an ammeter measure?

a)

Current

b)

Voltage

c)

Resistance

123.

Which symbols can represent a bulb in a circuit?

a)
b)
c)
d)
e)
124.

Which symbol represents an open switch in a circuit?

a)
b)
c)
d)
e)
125.

Which symbol represents a battery in a circuit?

a)
b)
c)
d)
e)
126.

Which pictures show a series circuit?

a)
b)
c)
d)
e)
127.

Which are true statements about electrical CURRENT?

a)

It is the flow of electrons

b)

It is the amount of charge flowing per second

c)

It is measured by a voltmeter

d)

It is also known as potential difference

128.

What does the A symbol represent? (choose 2)

a)

A device that measures current

b)

A device that measures potential difference

c)

A voltmeter that measures voltage

d)

An ammeter

129.

What does the voltmeter measure?

a)

the direction of electron flow

b)

the energy difference between the electrons before and after the bulb

c)

the number of electrons before and after the bulb

d)

the speed of electron flow before and after the bulb

130.

Each component of a circuit obstructs the flow of charge.

What is this called?

a)

Resistance

b)

Rating

c)

Conventional flow

d)

Hindrance

131.

How is resistance measured? (choose 2)

a)

In ohms (Ω)\left(\Omega\right)  

b)

p.d. (V) ÷\div  current (A)

c)

In volts (V)

d)

p.d. (v) X

current (A)

e)

In amperes (A)

132.

What would be the value on these Ammeters?

a)

All the same

b)

Going down as you go from 1 to 3

c)

Going up as you go from 1 to 3

133.

What would be the value on these Ammeters? (choose 2)

a)

All the same

b)

A1 and A4 would be the same

c)

A2 and A3 would add up the same as A1

d)

Going down from A1 to 4

e)

A1 and A4 would add up to the same as A2

134.

What would be the values shows on voltmeters 1 and 2? (choose 2)

a)

Both the same

b)

Equal to the V total when added together

c)

V1 is higher than V2

d)

The same as the Vtotal.

135.

What would be the values of V1, 2 and 3? (choose 2)

a)

All the same

b)

Going down from 1 to 3

c)

Going up from 1 to 3

d)

Adding up to equal the battery

e)

All the same as the battery

136.

The bulb brightness will be the same in both of these circuits.

a)

True

b)

False

137.

Conventional current is drawn as travelling from the positive battery terminal.

a)

True

b)

False

c)

Either

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