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Test Review: Electricity and Magnetism

Total questions: 63

Worksheet time: 34mins

Name
Class
Date
1.

What is a nucleus?

a)

unit for current

b)

device that interferes with the flow of an electrical charge

c)

allows electric charges to flow freely through it

d)

a core found at the center of every atom

2.

A continuous flow of electric charge

a)

electric current

b)

electrical power

c)

electrical discharge

d)

voltage

3.

the buildup of electric charges on an object

a)

electric current

b)

electrical discharge

c)

static electricity

d)

resistance

4.

materials that allow electrons to move through them easily

a)

insulators

b)

conductors

c)

direct circuit

d)

alternating circuit

5.

materials through which electrons CANNOT easily move

a)

insulators

b)

conductors

c)

alternating circuit

d)

direct circuit

6.

negatively charged subatomic particle

a)

proton

b)

electron

c)

neutron

d)

nucleus

7.

positively charged subatomic particle

a)

proton

b)

electron

c)

neutron

d)

nucleus

8.

an unbroken (closed) path through which an electric current can flow

a)

electrical circuit

b)

direct current

c)

alternating current

d)

series circuit

9.

a circuit with ONE path which current can flow

a)

direct current

b)

alternating current

c)

parallel circuit

d)

series circuit

10.

a circuit with MORE THAN ONE path which current can flow

a)

series circuit

b)

parallel circuit

c)

voltage

d)

ion

11.

subatomic particle with no charge

a)

proton

b)

electron

c)

nucleus

d)

neutron

12.

stated as a relationship between voltage, current, and resistance

a)

circuit

b)

Ohm's Law

c)

parallel circuit

d)

electric current

13.

Like charges _______.

a)

repel

b)

attract

c)

jump

d)

dance

14.

Opposite charges __________.

a)

repel

b)

attract

c)

jump

d)

dance

15.

measure of how much potential energy that electricity has

a)

ion

b)

voltage

c)

conductor

d)

resistance

16.

As resistance increases in a circuit, the power ___________.

a)

increases

b)

decreases

c)

stays the same

17.
A balloon is rubbed all over with wool.  The balloon will now attract wool because the balloon and wool
a)
are magnets
b)
have opposite charges
c)
have like charges
d)
have neutral charges
18.
In a static discharge, which particles move from one object to another?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
19.
Which of the following could be used as the core of a simple electromagnet?
a)
drinking straw
b)
iron nail 
c)
a soda bottle
d)
an ink pen
20.
A piece of nickel will be attracted to
a)
only the north pole of an electromagnet
b)
only the south pole of an electromagnet
c)
either pole of an electromagnet
d)
the iron core of an electromagnet
21.
What is voltage?
a)
a measure of electric current
b)
a kind of static elecricity
c)
a kind of current electricity
d)
a measure of potential energy difference
22.
Which of these in an insulator?
a)
a copper wire
b)
a silver spoon
c)
a plastic coating on a wire
d)
an aluminum coating on a wire
23.
What is the purpose of a switch in an electric circuit?
a)
to allow the circuit to be opened or closed
b)
to change the direction of the current
c)
to provide a push for the current
d)
to increase the electric power to the load
24.
What is the purpose of an electric motor?
a)
to convert electrical energy to mechanical energy
b)
to convert chemical energy to electrical energy
c)
to convert mechanical energy to electrical energy
d)
to convert mechanical energy to heat energy
25.
Electric current flowing through a wire produces
a)
static electricity
b)
an open circuit
c)
a permanent magnet
d)
a magnetic field
26.
What is the purpose of an iron core in an electromagnet?
a)
to hold the loops of wire in place
b)
to make the magnetic force stronger
c)
to change the direction of the electric current
d)
to change the direction of the magnetic force
27.
Each time a lightbulb is added to a series circuit, the other bulbs in the circuit 
a)
get brighter
b)
get dimmer
c)
stay the same brightness
d)
release more heat
28.
A group of lights are connected in a parallel circuit.  One of the lights is removed.  The rest of the lights will
a)
get brighter
b)
get dimmer
c)
go out
d)
not change
29.
Two lightbulbs are connected to an energy source by two loops.  What is this setup an example of?
a)
a parallel circuit
b)
a static discharge
c)
a series circuit
d)
an electromagnet
30.
When a switch connects two parts of a circuit, the circuit is
a)
series
b)
parallel
c)
open
d)
closed
31.
A string of lights is lit.  They are part of a series circuit.  One of the bulbs is removed.  The rest of the lights will
a)
go out
b)
stay lit
c)
get brighter
d)
get dimmer
32.
What is the purpose of a generator?
a)
to convert electrical energy to mechanical energy
b)
to convert chemical energy to electrical energy
c)
to convert mechanical energy to electrical energy
d)
to convert mechanical energy to heat energy
33.
A student is investigating how changing the size of the core of an electromagnet affects its strength.  Which of these is most likely the dependent variable in the student's investigation?
a)
the number of wire coils wrapped around the core
b)
the number of paper clips picked up by the electromagnet
c)
the voltage of the battery used in the circuit
d)
the size of the piece of iron used as the core
34.
What are the 2 poles of a magnet called?
a)
North & South
b)
East & West
c)
Up & Down
d)
Red & Blue
35.
A strong, short-lived magnet created by a looped current is ___.
a)
electromagnet
b)
electricity
c)
current
d)
generator
36.
A completed path for the transfer of electricity
a)
generator
b)
circuit
c)
motor
d)
battery
37.
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)
iron, electric, wire
c)
electric, wire, iron
d)
electric, battery, iron
38.
a)
attraction
b)
repulsion
39.
Surrounding every magnet is a _______ _______.
a)
magnetic field
b)
another magnet
c)
electrical current
d)
polar field
40.
What kind of circuit?
a)
series
b)
parallel
c)
light bulb
d)
consecutive
41.
Which is true?
a)
The light bulb will light up because the circuit is complete.
b)
The light bulb will light up because the circuit is broken.
c)
The light bulb will not light because the circuit is complete.
d)
The light bulb won't light because the circuit is broken.
42.
What is magnetism?
a)
invisible objects coming together
b)
full of electricity
c)
a force that attracts or repels certain materials
d)
metals
43.
How many poles does a magnet have?
a)
0
b)
3
c)
2
d)
1
44.
Protons and electrons have ____ charges.
a)
no
b)
identical
c)
neutral
d)
opposite
45.
Neutrons are ___________.
a)
Jimmy
b)
neutral
c)
positive
d)
negative
46.
Static electricity is the transfer of ________.
a)
neutrons
b)
electrons
c)
protons
d)
nuclei
47.
Electricity is the flow of ______.
a)
electrons
b)
neutrons
c)
protons
d)
particles
48.
When 2 magnets are close together, the magnetic force is ______
a)
far
b)
weak
c)
strong
d)
close
49.
What is a magnetic field?
a)
the opposite of a football field
b)
region around magnetic material
c)
region on a magnet
d)
field full of magnets
50.
Opposite poles __________.
a)
attract
b)
run
c)
repel
d)
sit
51.
Alike poles ________.
a)
repel
b)
fly
c)
attract
d)
hover
52.
a)
parallel circuit
b)
series circuit
c)
short circuit
d)
incomplete circuit
53.
What will happen?
a)
move away from each other
b)
repel
c)
move toward each other
d)
spin
54.

Which material is magnetized?

a)

A

b)

B

55.
A _______________ is a current-carrying coil of wire with many loops
a)
electromagnet
b)
solenoid
c)
magnet
d)
compass
56.
The strength of a magnet can be changed by
a)
adding less loops to the coil.
b)
adding more loops to the coil.
57.
The strength of an electromagnet can be affected by
a)
changing the current in the wire
b)
changing the space between the wires
c)
all of the above
d)
none of the above
58.
An example of a good conductor is
a)
copper
b)
sand
c)
plastic
59.
Electromagnets are strong magnets that can be turned on and off. 
a)
True
b)
False
60.
This is the opposition to the movement of charges flowing through a material. 
a)
Magnetism
b)
Resistance
61.
Why does opening a switch in an electric circuit stop the flow of current?
a)
Charges can't flow through a broken path.
b)
The magnetic domain is interrupted.
c)
The magnetic field disappears.
62.

An example of Alternating Current is

a)

Battery

b)

wall outlet

63.

An example of Direct Current is

a)

Battery

b)

Wall Outlet

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