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Electricity and Magnetism Review

Total questions: 60

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

A charge imbalance that results in the build up of excess electric charge on an object.

a)

Ionization

b)

Static Electricity

c)

shocking!

d)

grounding

2.

A material in which electrons are able to move easily is called

a)

Insulators

b)

Conductors

3.

Which way do electrons flow?

a)

Positive to Negative

b)

Negative to Positive

4.

What is the unit of measurement for current

a)

Ohm's

b)

Amperes

c)

Volts

5.
If current decreases, what has likely happened to resistance?
a)
It increased.
b)
It decreased.
c)
It stayed the same.
6.

The flow of electricity requires a

a)

complete path

b)

incomplete path

c)

insulated current

7.

Which of these materials is a good conductor of electricity?

a)

Rubber

b)

Metal

c)

Newspaper

d)

Glass

8.

The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?

a)

The switch produced an electric current

b)

Closing the switch broke the circuit

c)

Closing the switch completed the circuit

d)

The switch did not make a difference

9.

Who is the scientist that created the lightning rod?

a)

Michael Faraday

b)

Thomas Edison

c)

Benjamin Franklin

d)

George Washington

10.

The area surrounding a charged object within which a force can be exerted on other charged objects.

a)

perimeter

b)

tree line

c)

Electric Field

d)

Magnetic Field

11.

The three ways a charge can be transferred are:

a)

Conduction, Friction, and Induction

b)

Shocking, Stinging, and Tagging

c)

Billing, Calling, and Wire Transfer

d)

There is really only one way but when you hear what it is you may be shocked!

12.

As resistance decreases current will :

a)

decrease

b)

increase

c)

stay the same

d)

This really depends on who you talk to...

13.

Current is the flow of:

a)

Protons

b)

Neutrons

c)

Electrons

d)

Milk and Honey Baby!!!

14.

What unit do we use to measure voltage difference?

a)

Amps

b)

Volts

c)

Ohms

d)

Hugs

15.

The tendency of an object to oppose the flow of electrons.

a)

resistance

b)

electrostatic discharge

c)

blocking

d)

induction

16.

Just as water flows down a river so does electrons through a closed circuit. The net movement of electric charge in a single direction is called:

a)

pressure

b)

current

c)

voltage

d)

trickle effect

17.

The direction electrons flow through a circuit is also known as "actual current flow". Which statement best describes this flow.

a)

From positive to negative.

b)

From negative to positive.

c)

From sea to shining sea.

d)

There is not enough information to answer this question.

18.

This is the circuit symbol for ...

a)

an AC current source

b)

a DC current source

c)

a battery

d)

a fuse

19.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
20.

What is resistance measured in?

a)

Ω (Ohms)

b)

V (Volts)

c)

A (Amps)

d)

W (Watts)

21.

Electron flow from

a)

positive terminal of battery to negative terminal of battery

b)

negative terminal of battery to positive terminal of battery

22.

When drawing a circuit with a "Light Bulb" use the following symbol:

a)
b)
c)
d)
23.

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)

Circuit Breaker

24.

What component protects the appliance from overloading which could start a fire?

a)

Earth Wire

b)

Neutral Wire

c)

live wire

d)

Fuse

25.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
26.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
27.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
28.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
29.
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.
30.

Identify the fuse in the pictures below:

a)
b)
c)
d)

They are all fuses!

31.

Take a look at the picture and decide which direction the electrons are flowing.

a)
b)
32.

During the lab on Thursday we made a simple series circuit similar to the one pictured. What type of current is produced from the power source pictured?

a)

Direct Current (DC)

b)

Alternating Current (AC)

c)
d)
33.

Ohms are to resistance as Amps are to _____________.

a)

Current

b)

Voltage

c)

Power

d)

Rock 'n' Roll

34.

Ohm's Law states that V=IR (Voltage = Current multiplied by Resistance). I have extended the time on this question and want you to solve for resistance. Take your time before you answer.

a)

R=V/I

b)

R=I/V

c)

R=IV

d)

R=V2/I2

35.
Walking across a carpet is an example of charge being transferred by
a)
friction.
b)
induction.
c)
contact.
d)
static electricity
36.
A balloon has a negative charge.  The glass rod has a positive charge.  What will happen when the glass rod is brought near the balloon?
a)
The balloon will be attracted to the rod
b)
The balloon will be repelled by the rod
c)
The balloon will remain in place
d)
The balloon will spin in circles
37.

Two small hollow metal spheres hung on insulating threads attract one another as shown. It is known that a positively charged rod will attract sphere A. Which statements can be correctly concluded about the charge on the spheres?

a)

A has a positive charge

b)

B has a negative charge

c)

A and B have opposite charges

d)

A is neutral

38.

Water is a______?

a)

conductor

b)

insulator

39.
Lightning occurs because ___. 
a)
the negative charges at the bottom of clouds are attracted to the positive charges on the ground.
b)
the positive charges at the bottom of clouds are attracted to the negative charges on the ground.
c)
the positive and negative charges inside clouds are attracted to each other
d)
All of these reasons are correct.
40.

Which of these materials is an insulator?

a)
b)
c)
d)
41.

I am the path along which electricity travels.

a)

electric circuit

b)

conductor

c)

insulator

d)

fuse

42.

What is the function of a resistor?

a)

Stop current flow

b)

Limit voltage

c)

Limit current flow

d)

To light up

43.

Choose the correct electrical component according to the picture.

a)

bulb

b)

switch

c)

dry cell

d)

connecting wire

44.

A switch that opens a circuit by turning itself off is a...

a)

circuit breaker

b)

motor

c)

electromagnet

d)

insulator

45.
Using the picture above, which letter correctly labels the switch?
a)
A
b)
B
c)
C
d)
D
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 light bulb?
a)
A
b)
B
c)
C
d)
D
48.
Using the picture above, which letter correctly labels the wire?
a)
A
b)
B
c)
C
d)
D
49.

The potential difference that causes charges to move in a circuit is ___.

a)

voltage

b)

resistance

c)

current

d)

electric discharge

50.

A circuit that is connected to Earth is said to be _____.

a)

series

b)

parallel

c)

grounded

d)

discharged

51.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
52.
In this image, matching north poles from two magnets are introduced.  What do you predict will be the outcome?
a)
There will be no interaction.  The poles of magnets do not have an effect on one another.
b)
The two north poles will attract each other
c)
The two north poles will repel each other
d)
The two magnets will combine and become one magnet
53.
Where is Earth's magnetic field strongest?
a)
Along the outside lines
b)
Along the inside lines on either side
c)
Where the lines are close together at the poles
d)
In the space outside of the lines
54.
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
55.
If you wrap more coils around an electromagnet, it will become 
a)
brighter
b)
stronger
c)
weaker
d)
invisible
56.

What happens to the magnetic force as an object gets further away from the magnetic field?

a)

The force increases

b)

The force decreases

c)

The force stays the same

d)

There was no force to begin with

57.

What is this?

a)

electromagnet

b)

electric slide

c)

motor

d)

generator

58.

The planet earth is a giant magnet?

a)

True

b)

False

59.

Phenomenon where objects placed in a strong magnetic field become magnetized due to the poles within their atoms aligning (all e- in same direction).

a)

Ferromagnetism

b)

The Northern Lights

c)

Rust

d)

Electricity

60.
What kind of magnet can be turned on and off?
a)
refrigerator magnet
b)
electromagnet
c)
magnetite
d)
iron

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