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Electricity

Total questions: 75

Worksheet time: 55mins

Name
Class
Date
1.

Which is the best definition of current?

a)

the rate of flow of charge

b)

how much electricity is moving

c)

how fast the electrons move around the circuit

d)

how much energy each charge has

2.

which is the best definition for potential difference

a)

the rate of flow of charge

b)

the energy per unit charge

c)

how hard it is for charges to flow

d)

how much push the battery gives the electrons

3.

Which is true of a series circuit?

a)

current and voltage are both the same everywhere

b)

current adds, voltage is the same everywhere

c)

current is the same everywhere and voltage is shared

d)

current and voltage both add

4.

Which is true of a parallel circuit?

a)

current and voltage are both the same everywhere

b)

current adds, voltage is the same everywhere

c)

current is the same everywhere and voltage is shared

d)

current and voltage both add

5.

What is the potential difference across X?

a)

6V

b)

3V

c)

2V

d)

4V

6.

Calculate the resistance of X.

(remember V = 6V)

a)

12 ohms

b)

3 ohms

c)

0.67 ohms

d)

none of these

7.

What is the current in Y?

a)

3 A

b)

2 A

c)

1 A

d)

5 A

8.

Calculate the resistance of Y.

a)

6 ohms

b)

3 ohms

c)

2 ohms

d)

1 ohm

9.

When the temperature of resistor X increases, its resistance increases.

What would happen to the potential difference across X

a)

increase

b)

decrease

c)

stay the same

10.

When the temperature of resistor X increases, its resistance increases.

What would happen to the current in X?

a)

increase

b)

decrease

c)

stay the same

11.

When the temperature of resistor X increases, its resistance increases.

What would happen to the total current in the circuit?

a)

increase

b)

decrease

c)

stay the same

12.

What sort of conductor is this?

a)

ohmic

b)

non ohmic

c)

can't tell

13.

What can you determine about the temperature of the wire from figure 1

a)

it is increasing

b)

it is constant

c)

it is decreasing

14.

Which one of the wires, A, B or C, has the greatest resistance?

a)

A

b)

B

c)

C

15.

Where should the student connect an ammeter to measure current in the circuit?

a)

in parallel with the cell

b)

in series

c)

in parallel with the wire

d)

in parallel with the variable resistor

16.

Where should the student connect a voltmeter to allow the resistance of the wire to be found?

a)

in parallel with the cell

b)

in series

c)

in parallel with the wire

d)

in parallel with the variable resistor

17.

Why would switching off the circuit between readings have improved the accuracy of the student’s investigation?

a)

The charge flow through the wire would not change.

b)

The potential difference of the battery would not increase.

c)

The temperature of the wire would not change

d)

The power output of the battery would not increase.

18.

The student used crocodile clips to make connections to the wire. They could have used a piece of equipment called a ‘jockey’ knife. How would using the jockey knife have affected the accuracy and resolution of the student’s results compared to using the crocodile clip? Tick 2 boxes

a)

The accuracy of the student’s results would be higher.

b)

The accuracy of the student’s results would be lower.

c)

The accuracy of the student’s results would be the same.

d)

The resolution of the length measurement would be higher.

e)

The resolution of the length measurement would be lower.

19.

What sort of component is this?

a)

wire at constant temperature

b)

filament bulb

c)

diode

20.

What sort of component is this?

a)

wire at constant temperature

b)

filament bulb

c)

diode

21.

What sort of component is this?

a)

wire at constant temperature

b)

filament bulb

c)

diode

22.
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. 
23.
Which best describes a series circuit? 
a)
It has two light bulbs. 
b)
The same current flows through both light bulbs. 
c)
It uses a single battery.
d)
The current is divided between the light bulbs. 
24.
What is one problem with using a series circuit? 
a)
It has a lot of series. 
b)
If one goes down, they all go down! 
c)
It doesn't work properly.
d)
There are no problems. 
25.
What is one benefits of using a parallel circuit?  
a)
It gets confusing.
b)
There are no problems.
c)
If one goes down, it does not affect the others. 
d)
Porque es para llelio. 
26.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
27.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
28.
wood is a _____?
a)
conductor
b)
insulator
29.
brass is a _____?
a)
insulator
b)
conductor
30.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
31.
Is a house in a good idea for a parallel circuit
a)
Yes 
b)
No
32.
In an electrical circuit, electrons move from the __________.
a)
Negative pole to negative pole
b)
Negative pole to positive pole
c)
Positive pole to positive pole
33.
What will happen if one light bulb is removed from this circuit?
a)
the other bulbs will go out
b)
the other bulbs will get dimmer
c)
the other bulbs will get brighter
d)
the battery will become stronger
34.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
35.
The flow of electricity in a circuit-
a)
current
b)
flow
c)
circuit
36.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
37.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
38.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
39.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
40.
When the switch is closed, the light
a)
comes on
b)
stays off
c)
burns out
41.
The plastic around the wire is
a)
conductor
b)
insulator
c)
decoration
42.
Two batteries in a circuit make the lights in the circuit brighter than one battery.
a)
true
b)
false
43.
If the lights are on, the circuit is
a)
closed
b)
open
44.
If the lights are off, the circuit is
a)
closed
b)
open
45.
In a parallel circuit the current
a)
makes one circle
b)
stays in one path
c)
splits and goes through two components
46.
Two types of circuits are
a)
parallel and magnetic
b)
electromagnetic and series
c)
series and parallel
47.
An example of a parallel circuit is
a)
the wiring in a house
b)
a flashlight
c)
a single circular path
48.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
49.

This is the symbol for a...

a)

Thermistor

b)

Bulb

c)

Fixed Resistor

d)

Ammeter

50.

This is the symbol for a...

a)

Motor

b)

Ammeter

c)

Bulb

d)

Voltmeter

51.

This is the symbol for a...

a)

Light Dependent Resistor

b)

Light Emitting Diode

c)

Thermistor

d)

Cell

52.

This is the symbol for a...

a)

Light Emitting Diode

b)

Fuse

c)

Fixed Resistor

d)

Variable Resistor

53.

This is the symbol for a...

a)

Bulb

b)

Voltmeter

c)

Ammeter

d)

Motor

54.

This is the symbol for a...

a)

Light Emitting Diode

b)

Light Dependent Resistor

c)

Fuse

d)

Cell

55.

This is the symbol for a...

a)

Fuse

b)

Cell

c)

Fixed Resistor

d)

Variable Resistor

56.

This is the symbol for a...

a)

Battery

b)

Thermistor

c)

Motor

d)

Fuse

57.

This is the symbol for a...

a)

Thermistor

b)

Fixed Resistor

c)

Variable Resistor

d)

Fuse

58.

This is the symbol for a...

a)

Fixed Resistor

b)

Variable Resistor

c)

Light Dependent Resistor

d)

Fuse

59.

What colour is the live wire in a three pin plug?

a)

brown

b)

Blue

c)

Green and yellow

60.

What colour is the neutral wire in a three pin plug

a)

brown

b)

Blue

c)

Green and yellow

61.

Which label points to the Fuse on the diagram?

a)

C

b)

D

c)

E

d)

F

62.

Which label points to the Live Wire on the diagram ?

a)

A

b)

B

c)

C

d)

D

63.

Electric current is measured in

a)

kWh

b)

Amps

c)

Ohms

d)

Watts

64.

Why are overheating cables a hazard?

a)

Could cause a fire

b)

Could cause a electrocution

c)

Could cause a shortcircuit

d)

Could melt the fuse

65.

A device that contains a thin strip of metal that melts easily if the current in the circuit is too high

a)

Fuse

b)

resistor

c)

earth wire

d)

battery

e)

diode

66.

Name that component. Type just one word. 4 letters.

(a)  

67.

Name that component. Type one word, spelling is important so double check...

(a)  

68.

Name that component. One word. b (a)  

69.

Name that component.

(a)  

70.

Name the component

a)

ammeter

b)

voltmeter

c)

connector

d)

switch

71.

What does this component measure?

(a)  

72.

what does this component measure?

(a)  

73.

What might this component be? Look at the arrows...

a)

A heater

b)

A battery

c)

A light dependent resistor

d)

A switch

74.

What could this component be?

a)

A light bulb

b)

A speaker

c)

A drawing pin

d)

A coffee maker on its side

75.

What could this component be?

a)

A resistor

b)

A variable resistor

c)

A light bulb

d)

A 230 V power supply

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