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Electricity

Total questions: 150

Worksheet time: 2hrs 6mins

Name
Class
Date
1.

Choose the correct option.

An appliance that uses electricity and produces heat and light is:

a)

An iron

b)

A toaster

c)

A refrigerator

d)

A washing machine

2.

Think and Choose.

Which of the following are dangers connected with electricity?

a)

Wet hands

b)

Uncovered wires

c)

Broken plugs

d)

All of the above

3.

Type True or False.

You can put anything such as a fork into electric sockets.

(a)  

4.

Think and answer.

Look at the picture. Does it work by using Battery or Mains?

Type your answer.

(a)  

5.

Choose the correct word and fill in the blanks correctly. Type your answer.

(a)   are tall towers used for carrying electricity.(Power stations / Pylons / Sockets )

6.

Unscramble the letters to form a word.

Type your answer.

ectlEirtyci

(a)  

7.

Type True or False.

Batteries are useful because they are portable.

(a)  

8.

Choose the correct option.

Appliances that use batteries.

a)
b)
c)
d)
9.

Complete the sentence with the correct word.

Type your answer.

You must be (a)   ( careless / careful / carefree) when plugging things in a socket.

10.

Think and choose.

Most families keep a telephone in their kitchen. This is a device that changes electrical energy into ____________.

a)

Motion

b)

Heat

c)

Light

d)

Sound

11.

Choose the correct option.

What is electricity?

a)

It's only light

b)

It´s a form of energy.

c)

It's heat.

d)

It´s a lamp or a candle.

12.

Give a reason for.

Choose the correct option.

A washing machine uses mains electricity. Why?

a)

It needs more wires.

b)

It needs more chemicals.

c)

It needs more power.

d)

It needs more heat.

13.

Choose the correct option.

How can we prevent accidents when using electricity?

a)

Pull a plug by its cord.

b)

Using many plugs in one socket.

c)

Keep electrical devices away from water.

d)

Put fingers and sharp objects into electrical items.

14.

Complete the following. Type your answer.

A (a)   is a device that stores electricity.

15.

Think and choose.

What is a safety tip when using electricity?

a)

Touch everything with your hands.

b)

Ask an adult to help with electical items.

c)

Leave the candles on.

d)

Play with matches.

16.

Choose the correct picture.

Which of these devices do not use electricity?

a)
b)
c)
d)
17.

Choose the correct pictures.

What should you not do when using electricity?

The answer can be more than one.

a)
b)
c)
d)
18.

Choose the correct option .

The meaning of this picture is...

a)

don't forget to wash your hands

b)

don't touch switches with wet hands

c)

don't touch the wall

d)

don't touch the hand

19.

Choose the correct option.

Give a reason.

Why should we never cut open batteries?

a)

They will explode.

b)

They have harmful chemicals inside them.

c)

They are colourful.

d)

They have no electricity.

20.

Fill in the blanks. Type your answer.

Thinner wires which take the electricity to the (a)   in our homes and schools is called mains electricity.

21.

Some things here used motors, except ...

a)

Fan

b)

Washing Machine

c)

Door Bell

22.

Radio and alarm used ... to make the sounds.

a)

motors

b)

buzzers

c)

switches

23.

True or False, windmill needs buzzers.

a)

True

b)

False

24.

Does mixer use buzzers or motors?

a)

Motors

b)

Buzzers

25.

An object that uses electricity to make something move and spin round called....

a)

buzzer

b)

motor

26.

The red wire from the buzzer must be connected to the positive side of the cell. Do you think the buzzer will work by this way?

a)

Yes

b)

No

27.

Sella connects the red wire from the buzzer to the negative side of the cell. Do you think this way will make buzzer work?

a)

No

b)

Yes

28.

Why does the right circuit have the light bulb on?

a)

Because the switch is closed

b)

Because the switch is opened

c)

Because it has the switch

29.

Why does the left circuit have no light bulb?

a)

Because the switch is closed

b)

Because the switch is opened

c)

Because it has switch

30.

A device for making, breaking, or changing the connections in an electrical circuit called as.....

a)

circuit

b)

wires

c)

switch

31.

What is the right warning for this picture?

a)

Never touch the damaged wire with wet hands

b)

Never touch the switch with wet hands

c)

Never touch the main electricity with wet hands

32.

Vacuum needs .... to be used.

a)

buzzer

b)

motor

33.

An object which makes a buzzing noise when electricity passes through it called as....

a)

Motor

b)

Buzzer

34.
What is a circuit?
a)
an outlet or switch
b)
a path which an electric current flows
c)
a poor conductor
35.
What is an electric current? 
a)
the flow of electricity 
b)
electricity moving in only one direction
c)
a switch that gives power
36.
A conductor is ____________
a)
something that allows electric current to flow easily
b)
something that limits the flow of electricity
37.

Why is a switch used in a circuit?

a)

To complete or break a circuit

b)

To save energy

c)

To prevent electric shocks

d)

To make the bulb glow easily

38.

What are the two places on the battery to which the wires can be attached called?

a)

Switches

b)

Filaments

c)

Insulators

d)

Terminals

39.

A cell, a conducting wire and a bulb are used for constructing a simple electric circuit. What are they called?

a)

Consumers

b)

Connectors

c)

Components

d)

Sources

40.

Cell is a device which-

a)

Converts chemical energy into electrical energy.

b)

Electrical energy into light energy

c)

Electrical energy into magnetic energy

d)

None of these

41.

Filament of a bulb is made up of-

a)

Aluminium

b)

Chromium

c)

Platinum

d)

Tungsten

42.

Would the bulb glow in the given circuit?

a)

Yes

b)

No

43.

A Bulb glows only in-

a)

A closed circuit

b)

An open circuit

c)

In both circuits

d)

Open circuit if bulb is not fused

44.

A bulb has-

a)

Two terminals and one filament

b)

Two terminals and two filaments

c)

Multiple terminals and single filament

d)

Single terminal and Single filament

45.

Rita connected two bulbs across two cells in a simple circuit. What should she do to make the bulbs glow dimmer?

a)

Replace one cell with a piece of chalk

b)

Replace one cell with a piece of wire

c)

Replace one bulb with a piece of wire

d)

Replace one bulb with another cell

46.

Only one of the circuits below would work to light the light bulb. Choose the circuit below that would make the light bulb light up.

a)
b)
c)
d)
47.

The plus sign on a battery shows which terminal?

a)

Positive

b)

Negative

48.

The minus sign on a battery shows which terminal?

a)

Positive

b)

Negative

49.

Which of the following could be used to complete a circuit?

a)

Cloth

b)

Cardboard

c)

Rubber Band

d)

Penny

50.
Which of the following is NOT a conductor?
a)
Water
b)
Aluminum
c)
Wood
d)
Penny
51.

The student arrived home and turned on a light switch, so she could see how to get to her bedroom. The switch allowed electricity to flow and was transformed into-

a)

Light energy

b)

mechanical energy

c)

superior energy

d)

radiant energy

52.

Which of these cells does not convert chemical energy to electrical energy?

a)

SOLAR CELL

b)

DRY CELL

c)

Button cell

d)

PRIMARY CELLS

53.

A combination of two or more electric cells is called _____

a)

Electric circuit

b)

Battery

c)

Terminals

d)

None of these

54.

What does a fuse do?

a)

Melt down for no reason.

b)

Stop electricity

c)

Stop excessive electricity

55.

What is this?

a)

Battery

b)

Electromagnet

c)

Soleoid

d)

Solenoid

56.

What are the effects of electricity?

a)

Chemical effect

b)

Magnetic effect

c)

Heating effect

d)

Illuminating effect

57.

What are incandescent bulbs?

a)

Bulbs with mercury vapour

b)

Bulbs tungsten filament

c)

Bulbs with light emitting diodes

58.

What is the full form of the ISI mark?

a)

Indian standard institution

b)

India standards institutions

c)

Indian Standards institution

59.

Who developed the ISI mark?

a)

Bureau of India standard

b)

Bureau Indian standards

c)

Bureau India standard

d)

Bureau of Indian Standards

60.

What kind of products contain ISI mark?

a)

Electrical appliances

b)

Switches,Motors,Wiring Cables

c)

Computers,Mobiles

61.

Electrons are____________particles

a)

Positive

b)

Negative

c)

Positively charged

d)

Negatively charged

62.

When two or more cells are joined together it forms a

a)

Dynamo

b)

Radio

c)

Transistor

d)

Battery

63.

When does an electromagnet lose its magnetic Property?

a)

When current is very high

b)

When its switched off

c)

When heat is very high

d)

When current is switched on

64.

What is an electromagnet based on ?

a)

Magnetic effect

b)

Electric current

c)

Magnetic effect of electric current

d)

Electro-chemical effect of current

65.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 
a)
The switch needs to be opened.
b)
The switch needs to be closed.
c)
The cell needs an insulator.
d)
The wire needs to be connected to the bottom of the cell.
66.
Which property of wood makes it a good material for the handle on a cooking tool? 
a)
Wood is a natural material. 
b)
Wood is unaffected by metal. 
c)
Wood conducts heat well. 
d)
Wood does not conduct electricity well.
67.
Mary-Alice likes to bring her coffee to work each morning.  However, she wonders what the best cup to bring would be if she wants her coffee to stay warm.  Which of the following materials would keep Mary-Alice’s coffee warm the longest? 
a)
paper
b)
Styrofoam
c)
 plastic
d)
 glass
68.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
69.
The continuous flow of electric charges through a material is called...
a)
Electric Field
b)
Electric Force
c)
Electric Current
d)
Electric Circuit
70.

What kind of circuits allow the movement of electrical energy?

a)

broken circuits

b)

short circuits

c)

open circuits

d)

closed circuits

71.
Circuits in your home, school, or other buildings are _____________ circuits.
a)
series
b)
parallel
c)
short
72.
What happens when the circuit is open?
a)
light bulb comes on
b)
device won't work
c)
static discharge
d)
lightning
73.
In most electrical circuits, the pathway is made of:
a)
Wood
b)
Plastic
c)
Metal
d)
Static
74.

What does a fuse do?

a)

Melt down for no reason.

b)

Stop electricity

c)

Stop excessive electricity

75.

What is this?

a)

Battery

b)

Electromagnet

c)

Soleoid

d)

Solenoid

76.

What are the effects of electricity?

a)

Chemical effect

b)

Magnetic effect

c)

Heating effect

d)

Illuminating effect

77.

What are incandescent bulbs?

a)

Bulbs with mercury vapour

b)

Bulbs tungsten filament

c)

Bulbs with light emitting diodes

78.

What is the full form of the ISI mark?

a)

Indian standard institution

b)

India standards institutions

c)

Indian Standards institution

79.

Who developed the ISI mark?

a)

Bureau of India standard

b)

Bureau Indian standards

c)

Bureau India standard

d)

Bureau of Indian Standards

80.

What kind of products contain ISI mark?

a)

Electrical appliances

b)

Switches,Motors,Wiring Cables

c)

Computers,Mobiles

81.

Electrons are____________particles

a)

Positive

b)

Negative

c)

Positively charged

d)

Negatively charged

82.

When two or more cells are joined together it forms a

a)

Dynamo

b)

Radio

c)

Transistor

d)

Battery

83.

When does an electromagnet lose its magnetic Property?

a)

When current is very high

b)

When its switched off

c)

When heat is very high

d)

When current is switched on

84.

What is an electromagnet based on ?

a)

Magnetic effect

b)

Electric current

c)

Magnetic effect of electric current

d)

Electro-chemical effect of current

85.
A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 
a)
The switch needs to be opened.
b)
The switch needs to be closed.
c)
The cell needs an insulator.
d)
The wire needs to be connected to the bottom of the cell.
86.
Which property of wood makes it a good material for the handle on a cooking tool? 
a)
Wood is a natural material. 
b)
Wood is unaffected by metal. 
c)
Wood conducts heat well. 
d)
Wood does not conduct electricity well.
87.
Mary-Alice likes to bring her coffee to work each morning.  However, she wonders what the best cup to bring would be if she wants her coffee to stay warm.  Which of the following materials would keep Mary-Alice’s coffee warm the longest? 
a)
paper
b)
Styrofoam
c)
 plastic
d)
 glass
88.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
89.
The continuous flow of electric charges through a material is called...
a)
Electric Field
b)
Electric Force
c)
Electric Current
d)
Electric Circuit
90.

What kind of circuits allow the movement of electrical energy?

a)

broken circuits

b)

short circuits

c)

open circuits

d)

closed circuits

91.
Circuits in your home, school, or other buildings are _____________ circuits.
a)
series
b)
parallel
c)
short
92.
What happens when the circuit is open?
a)
light bulb comes on
b)
device won't work
c)
static discharge
d)
lightning
93.
In most electrical circuits, the pathway is made of:
a)
Wood
b)
Plastic
c)
Metal
d)
Static
94.

Cell is a device which

a)

converts chemical energy into electrical energy

b)

electrical energy into light energy

c)

electrical energy into magnetic energy

d)

None of these

95.

A bulb has

a)

two terminals and one filament

b)

two terminals and two filaments

c)

multiple terminals and single filament

d)

single terminal and single filament

96.

Filament of a bulb is made up of

a)

aluminium

b)

chromium

c)

platinum

d)

tungsten

97.

Bulb glows only in

a)

closed circuit

b)

open circuit

c)

in both circuits

d)

open circuit if bulb is not fused

98.

A battery is

a)

a single cell

b)

a combination of cells in which cells are joined (+) to (-)

c)

a combination of cells in which cells are joined (+) to (+)

d)

None of these

99.

What are the two places on the battery to which the wires can be attached called?

a)

Switches

b)

Filaments

c)

Insulators

d)

Terminals

100.

Which type of energy is stored in a battery?

a)

chemical energy

b)

kinetic energy

c)

light energy

101.

Which of these will generate electric current when kept in sunlight but not in the dark?

a)

Solar cell

b)

Car battery

c)

Dry cell

d)

Button cell

102.

____ is the positive terminal of an electrical cell.

a)

Metal disc

b)

Metal case

c)

Metal cap

d)

Metal base

103.

The tiny coiled metal wire present inside the bulb is called ___

a)

Element

b)

Conductor

c)

Filament

d)

None of these

104.

The electric current in a closed circuit always flows from the ____ terminal of the electric cell to the _____ terminal.

a)

Negative to positive

b)

Positive to negative

c)

Positive to positive

d)

None of these

105.
What is a circuit?
a)
an outlet or switch
b)
a path which an electric current flows
c)
a poor conductor
106.
Label the circuit
a)
closed circuit
b)
complete circuit
c)
incomplete circuit
d)
working circuit
107.

Look at the diagram. What is the term for "A"?

a)

Conductor

b)

Switch

c)

Transformer

d)

Source

108.

Look at the diagram. What is the term for "B"?

a)

Conductor

b)

Switch

c)

Transformer

d)

Source

109.

Look at the diagram. What is the term for "C"?

a)

Conductor

b)

Switch

c)

Transformer

d)

Source

110.

Look at the diagram. What is the term for "D"?

a)

Conductor

b)

Switch

c)

Transformer

d)

Source

111.

A ______ opens and closes an electric circuit.

a)

conductor

b)

switch

c)

source

d)

insulator

112.

A material that does not allow electricity to flow through the circuit is known as a _____

a)

conductor

b)

insulator

c)

source

d)

switch

113.

A material that allows electricity to flow through the circuit without disruption is ______

a)

conductor

b)

insulator

c)

switch

d)

source

114.

An example of a conductor of electricity is

a)

rubber

b)

plastic

c)

glass

d)

copper

115.

An example of an insulator of electricity is

a)

rubber

b)

copper

c)

silver

d)

iron

116.

Electricity from a power plant, solar conversion, and batteries are all examples of _____

a)

conductors

b)

insulators

c)

sources

d)

switches

117.

A circuit with the switch open allows

a)

electricity to flow so the switch is on

b)

electricity to NOT flow so the device is on

c)

electricity to flow so the device is off

d)

electricity to NOT flow so the device is off

118.

Every circuit needs AT LEAST which of the following

a)

source, conductor, transformer

b)

switch, conductor, transformer

c)

insulator, switch, source

d)

source, insulator, conductor

119.

A ____ circuit has more than one path available for electrons to flow through, so if one portion of the circuit is not functioning, the whole circuit does not shut down

a)

series

b)

parallel

c)

incomplete

d)

complete

120.

A ____ circuit has only one path for electrons to flow and therefore, when one portion of the circuit is disrupted, the whole circuit shuts down.

a)

series

b)

complete

c)

incomplete

d)

parallel

121.

____ is the positive terminal of an electrical cell.

a)

Metal disc

b)

Metal case

c)

Metal cap

d)

Metal base

122.

A combination of two or more electric cells is called _____

a)

Electric circuit

b)

Battery

c)

Terminals

d)

None of these

123.

_____ is an electric device which easily closes or opens an electric circuit.

a)

Filament

b)

Electric bulb

c)

Electric switch

d)

Electric cell

124.

A material which does not allow the electricity to pass through it is _____

a)

Conductor

b)

Electric cell

c)

Insulator

d)

None of these

125.

Electric energy is produced from the ______ within the cell.

a)

Chemicals

b)

Metals

c)

Terminals

d)

None of these

126.

The electric current in a closed circuit always flows from the ____ terminal of the electric cell to the _____ terminal.

a)

Negative to positive

b)

Positive to negative

c)

Positive to positive

d)

None of these

127.
For electrical energy to flow, there must be a(n) ______.
a)
good battery
b)
copper wire
c)
on/off switch
d)
closed circuit
128.

Why is it unsafe to switch on a bulb with wet hands?

a)

The switch blows off.

b)

It can give a shock.

c)

The bulb gets fused.

d)

The wires are disconnected.

129.

Why do electricians wear gloves made of rubber?

a)

It is soft.

b)

It is waterproof.

c)

It is an insulator.

d)

It is inexpensive.

130.

Why is tungsten used as a filament in electric bulbs?

a)

It is non luminous

b)

It is a soft metal

c)

It has a high melting point

d)

It has a low melting point

131.

The bulb in a circuit glows when electric current

a)

flows through the glass covering

b)

flows through its filament

c)

stops flowing to the bulb

d)

flows into the air through the bulb

132.

What are the two places on the battery to which the wires can be attached called?

a)

Switches

b)

Filaments

c)

Insulators

d)

Terminals

133.

Cell is a device which-

a)

Converts chemical energy into electrical energy.

b)

Electrical energy into light energy

c)

Electrical energy into magnetic energy

d)

None of these

134.

Which of the following is the symbol of an electric bulb?

a)
b)
c)
d)
135.

What is an electric circuit?

a)

A closed path between the cell and bulb in which electricity flows.

b)

The flow of electrons through a conductor.

c)

A device the interrupts the flow of electrons.

136.

Button cells are used in devices

a)

remotes

b)

wrish watches

c)

calculator

d)

all of the above

137.

Identify the symbol

a)

bettery

b)

key closed

c)

key open

d)

cell

138.

In a battery the positive terminal of one cell is connected to

a)

positive terminal of other cell

b)

negative terminal of other cell

139.

What is a fuse?

a)

A safety device in the circuit.

b)

The part which lights up in a bulb when the bulb is switched on.

c)

The negative terminal of an electric cell.

d)

The positive terminal of a bulb.

140.

To prevent electric shocks, the metallic electrical wires are covered with

a)

paper

b)

cotton

c)

aluminium

d)

plastic

141.

Study the circuit diagram.


Which bulb, if faulty, would allow only one other bulb to light up in the circuit.

a)

W

b)

X

c)

Y

d)

Z

142.

The diagram below shows five lamps connected to two batteries.


When one of the lamps is not working, only two light bulbs remain lighted.


Which lamp is NOT working?

a)

A

b)

B

c)

C

d)

D

143.

Study the circuit below.

Which of the bulbs, B and C, will remain lit when bulb A blows?

a)

B only

b)

C only

c)

B and C

d)

none

144.

Siva wanted to find out whether liquid X is a conductor of electricity. The diagram below shows some of the apparatus found in the Science Room.

Which one of the following shows the most suitable set-up for Siva’s experiment?

a)
b)
c)
d)
145.

Mary set up the circuit shown below. At first, the identical bulbs, A, B, C and D, lit up to the same level of brightness.


She then removed bulb E from the bulb holder and battery Y from the battery holder. What would happen to bulbs A, B, C and D?

a)

Bulbs A, B, C and D are dimmer than before.

b)

Bulbs A and B are dimmer than bulbs C and D.

c)

Bulbs A and B are brighter than bulbs C and D.

d)

Bulbs A, B, C and D do not light up.

146.

Study the four circuits A, B, C and D shown below.


The bulbs and the batteries in the four circuits are identical. All the bulbs are lit up.


Which one of the following statements about the brightness of the bulbs is correct?

a)

The bulb in circuit A is as bright as the bulb in circuit C.

b)

The bulb in circuit A is as bright as each bulb in circuit D.

c)

Each bulb in circuit B is brighter than the bulb in circuit C.

d)

Each bulb in circuit B is brighter than each bulb in circuit D.

147.

Study the circuit below. Bulbs A and B are identical and the three batteries are identical. At first, bulb A is unlit while bulb B is lit with a brightness of 10 units.


If the button is pressed and held down, what would happen to bulbs A and B?

a)

Bulb A - as bright as 10 units

Bulb B - unlit

b)

Bulb A - brighter than 10 units

Bulb B - unlit

c)

Bulb A - as bright as 10 units

Bulb B - brighter than 10 units

d)

Bulb A - brighter than 10 units

Bulb B - brighter than 10 units

148.

In the circuit below, the bulbs and batteries are all working properly.


Which of the following switches should be closed so that only one bulb will light up?

a)

S1 and S4 only

b)

S2 and S4 only

c)

S1 and S3 only

d)

S2 and S3 only

149.

Gopal set up four electrical circuits P, Q, R and S using identical batteries and identical bulbs. The batteries and bulbs are all working properly.


Which of the following is correct?

a)

Circuit(s) with brightly lit bulb(s) - Q

Circuit(s) with dimly lit bulb(s) - P, R and S

b)

Circuit(s) with brightly lit bulb(s) - Q and S

Circuit(s) with dimly lit bulb(s) - P and R

c)

Circuit(s) with brightly lit bulb(s) - R and S

Circuit(s) with dimly lit bulb(s) - P and Q

d)

Circuit(s) with brightly lit bulb(s) - P, Q and R

Circuit(s) with dimly lit bulb(s) - S

150.

Each of the circuits below has an iron rod, a wooden rod and a plastic rod.


In which of the above circuits would the bulb light up?

a)

A only

b)

B only

c)

Both A and B

d)

None of the circuits

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