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Electricity

Total questions: 67

Worksheet time: 37mins

Name
Class
Date
1.
A battery or other device which provides energy for a circuit
a)
Conductor
b)
Power source
c)
Parallel circuit
d)
Complete circuit
2.
Switch
a)
The part of a circuit which can control whether electricity flows
b)
An electrical force which occurs as electrons are built up in an object
c)
A small device that stores energy in a chemical form
d)
The area of a conductor through which a current is able to move
3.
a)
Series circuit
b)
Incomplete circuit
c)
Parallel circuit
d)
Power source
4.
When there are several path for the current to follow
a)
Pathway
b)
Conductor
c)
Series circuit
d)
Parallel circuit
5.
A small device that stores energy in a chemical form
a)
Complete circuit
b)
Switch
c)
Power source
d)
Battery
6.
What is a conductor?
a)
A material that allows electricity to go through it
b)
The area of a conductor through which a current is able to move
c)
A battery or other device which provides energy for a curcuit
d)
When there is only one path for the electricity to flow
7.
a)
Parallel circuit
b)
Series circuit
c)
Incomplete circuit
d)
Switch
8.
Series circuit
a)
A material that allows electricity to go through it
b)
Only one pathway for the electricity to flow
c)
A device which provides energy for a circuit
d)
More than one path for the electricity to flow
9.

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 has more than one path to flow through

10.
If the current through the battery was 10A in this diagram. What would the current through each bulb be?
a)
10A
b)
5A
c)
20A
d)
0A
11.
This circuit won't work. What essential part is missing from this circuit?
a)
resistance
b)
source of electric current
c)
conductor
d)
ammeter
12.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
13.

Where should an ammeter be located to correctly measure the total current and where should a voltmeter be located to correctly measure the total voltage?

a)

ammeter at 3 and voltmeter at 4

b)

ammeter at 1 and voltmeter at 4

c)

ammeter at 2 and voltmeter at 3

d)

ammeter at 1 and voltmeter at 2

14.

The total current through this circuit is

a)

0.02 amps

b)

0.09 amps

c)

50 amps

d)

9 amps

15.

Why is 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

16.

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

17.

A material that does NOT let electricity pass through it is called ...

a)

An electrical conductor

b)

An electrical insulator

c)

An electrical source

d)

An electric appliance

18.
Which bulbs will light?
a)
1 and 2
b)
2 and 3
c)
3 and 4
d)
4 and 2
19.
This image represents what type of circuit?
a)
open
b)
closed
c)
series
d)
parallel
20.
Will the light bulb in this circuit light and why/why not?
a)
yes, because it has two batteries
b)
no, because the switch is open
c)
yes, because it is in a circuit
d)
no, because the bulb is burned out
21.
If bulb 1 burns out, what will occur?
a)
bulbs 2 and 3 will go out
b)
bulbs 2 and 3 receive more volts
c)
bulbs 2 and 3 will stay lit
d)
nothing will happen
22.
what is this symbol for?
a)
light bulb
b)
cell
c)
battery
d)
resistor
23.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
24.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
25.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
26.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
27.
This is the symbol for a _____?
a)
Lamp
b)
Water wheel
c)
Loudspeaker
d)
Motor
28.
a)
Closed switch
b)
Push switch
c)
Trap door
d)
AC Power supply
29.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
30.
How should you put in an Ammeter?
a)
In Parallel
b)
In Series
31.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
32.
A voltmeter should be placed ........... in a circuit
a)
in parallel
b)
in series
c)
in order
d)
upside down
33.
What would the voltmeter read
a)
1V
b)
2V
c)
3V
d)
6V
34.
Resistance is a measure of....
a)
the energy per unit charge in a circuit
b)
how hard it is for electrons to move through the circuit
c)
how hard it is for electrons to move through the battery
d)
the number of charge carriers in a circuit
35.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
36.
The potential difference that causes charges to move in a circuit is ___.
a)
voltage
b)
resistance
c)
current
d)
electric discharge
37.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from one source. 
c)
Electricity flows along more than one pathway. 
d)
The flow of electricity comes from more than one source. 
38.
The unit for current is the 
a)
Volt
b)
Ohm
c)
Electron
d)
Amp
39.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
40.

When electricity passes through a light bulb it is changed to _______________________.

a)

motion energy

b)

light energy

c)

static electricity

d)

magnetic energy

41.

Which is the best example of electric energy being transformed into sound energy?

a)

toaster

b)

electric blanket

c)

television

d)

lamp

42.

Which is the best example of electrical energy being transformed into the energy of motion?

a)

computer screen

b)

digital clock

c)

stove

d)

fan

43.

Electricity is a form of energy that can be changed into other forms of energy, including __________, __________, __________, __________

a)

light, heat, sound, motion

b)

cooling, running, freezing, motion

c)

heat, air, tires, fans

44.

The flow of electricity is an _____________________.

a)

battery

b)

resistor

c)

electric current

45.

A complete pathway for the flow of electricity is called a ________________.

a)

circuit

b)

series

c)

parallel

d)

current

46.
Using the picture above, which letter correctly labels the battery?
a)
A
b)
B
c)
C
d)
D
47.
Using the picture above, which letter correctly labels the switch?
a)
A
b)
B
c)
C
d)
D
48.
Using the picture above, which letter correctly labels the light bulb?
a)
A
b)
B
c)
C
d)
D
49.
Using the picture above, which letter correctly labels the wire?
a)
A
b)
B
c)
C
d)
D
50.

What is the name of the pin labelled 2 in the diagram?

a)

Earth

b)

Neutral

c)

Live

51.

What colour is the Earth wire in a plug?

a)

Red

b)

Red and black

c)

Green

d)

Green and yellow

52.

Which is the live wire in the diagram?

a)

Number 2

b)

Number 3

c)

Number 4

d)

Number 5

53.

What does the graph on the left show?

a)

direct current

b)

alternating current

54.

Imagine the diagrams are numbered 1,2,3,4 from left to right.

Which is the symbol for a fuse?

a)

1

b)

2

c)

3

d)

4

55.

Imagine the symbols are numbered 1,2,3,4 from left to right.

What is number 3 the symbol for?

a)

A variable resistor

b)

A fuse

c)

A lamp

d)

A fixed resistor

56.
Current is measured in what unit?
a)
ohms
b)
volts
c)
watts
d)
amps
57.
Power is measured in what unit?
a)
amps
b)
volts
c)
watts
d)
ohms
58.
Resistance is measured in what unit?
a)
ohms
b)
amps
c)
watts
d)
volts
59.
What does the Greek letter Ω,  (i.e. Omega) represent?
a)
amps
b)
volts
c)
watts
d)
ohms
60.
What is a kilo equal to?
a)
100
b)
1,000
c)
100,000
d)
1,000,000
61.
what is the power of a lamp whose current is 6 A and the voltage across it is 120 V?
a)
120 W
b)
720 W
c)
16 W
d)
10 W
62.

A wire has a resistance of 10 Ω\Omega  . It's length is now tripled, what would its new resistance be?

a)

30Ω

b)

20Ω

c)

10Ω

d)

40Ω

63.

How much charge flows through a wire in 80s if the current is a constant 5.4A?

a)

432C

b)

360C

c)

524C

d)

344C

64.

Potential difference is the same as...?

a)

Voltage

b)

Current

c)

Power

d)

Coulombs

65.

What is the voltage of a bulb which produces 20J of energy for 2 Coulombs of charge?

a)

10V

b)

40V

c)

0.1V

d)

15V

66.
A correct statement of Ohm’s Law is:
a)
I= V R
b)
V ∝ I
c)
V = IR
d)
both b and c
67.

What is the resistance of a bulb if a current of 0.5 A flows through it when there is a voltage of 12 V across it?

a)

24 Ω

b)

6 Ω

c)

24 A

d)

6 A

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