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Review Quiz; Electricity & Magnetism

Total questions: 80

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

When two different types of insulators are rubbed together, ____________ electric charges are produced.

a)

mobile

b)

static

c)

no

d)

some

2.

They are two types of electric charges: positive charge and negative charge.

a)

True

b)

False

3.

Same or like charges ___________ each other.

a)

attract

b)

repel

4.

Opposite charges ___________ each other.

a)

attract

b)

repel

5.

The object that gains electrons will be ______________________.

a)

positively charged

b)

negatively charged

c)

neutral

6.

The object that loses electrons will be ______________________.

a)

positively charged

b)

negatively charged

c)

neutral

7.

Choose the correct reason why the hair stand and attracted to the balloon when the balloon is rubbed to the hair?

a)

Both balloon and hair are neutral

b)

Both balloon and hair are same charged

c)

The balloon is negatively charged and hair is neutral

d)

The balloon and hair are different charged

8.

A glass rod becomes positively charged when it is rubbed with silk. This is because the glass rod

a)

gains protons

b)

loses protons

c)

gains electrons

d)

loses electrons

9.

You walk across a shag carpet and become negatively charged. You became negatively charged because...

a)

Protons from your body traveled to the carpet and therefore you became negatively charged

b)

Protons from the carpet traveled to your body and therefore you became negatively charged

c)

Electrons from your body traveled to the carpet and therefore you became negatively charged

d)

Electrons from the carpet traveled to your body and therefore you became negatively charged.

10.

Diagram shows a situation where we know Balloon C is negatively charged.

Which of these best applies to Balloon A?

a)

Positively charged

b)

Negatively charged

c)

Positively charged or neutral

d)

Negatively charged or neutral

11.

What is the result of the force of attraction that exists between the positive charges on the ground and the negative charges in the clouds?

a)

Raining

b)

Lightning

c)

Thunder

d)

Whirlpool

12.
Which picture(s) is/are example(s) for Electrostatics?
a)
B, C, D
b)
B, C
c)
A, D
d)
A, B, C
13.

Staying in the closed car is safe during lightning and thunder storms because________________.

a)

Electric charge stays on the outer surface of the car only

b)

The car is made of non metal

c)

Electric charge can travel inside the car and we can get a shock

d)

The car is an insulator

14.

When a person randomly touches a metallic doorknob, he/she is prone to feel a short term electric shock. How can one effectively avoid this from happening?

a)

Touching other people before touching the doorknob.

b)

Touching a wooden surface before touching the doorknob.

c)

Rub both hands on the clothes before touching the doorknob.

15.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
16.
Static means...
a)
not moving
b)
moving slowly
c)
moving quicky
17.

Will the balloons ATTRACT or REPEL each other?

a)
b)
18.
Metals such as copper and aluminum are good ______________. 
a)
insulators
b)
conductors
c)
circuits
d)
charges
19.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
20.
Current is...
a)
moving protons
b)
moving electrons
c)
measured in volts
d)
measured in ohms
21.
Voltage is simply defined as...
a)
what 'pushes' electrons
b)
what 'stops' electrons
c)
moving electrons
22.
Good conductors are _______ resistors
a)
bad
b)
good
23.
Good insulators are _______ resistors
a)
good
b)
bad
24.
___________ wires keep electrons on course & protect us from the dangerous flow of electricity. 
a)
Insulated
b)
Conducted
25.

The continuous flow of electric charges through a material

a)

electric current

b)

electric circuit

c)

voltage

d)

parallel circuit

26.

A form of energy caused by the movement of electrons

a)

electricity

b)

voltage

c)

electric current

d)

parallel circuit

27.
Resistance is...
a)
What "slows down" electrons
b)
What "speeds up" electrons
c)
Moving electrons
d)
What "pushes" electrons
28.

What is a circuit that only has ONE path for electricity to flow?

a)

series circuit

b)

closed circuit

c)

parallel circuit

d)

light bulb

29.
Which best describes a simple series circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from the switch.
c)
Electricity flows along many pathways.
d)
The flow of electricity comes from the light bulb.
30.
When all parts of the circuit are connected it is a ______ circuit. 
a)
open
b)
closed
31.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of electrical current
c)
the pathway that electrical current flows
d)
to add more power to the circuit
32.
This circuit is .....?
a)
open
b)
parallel
c)
closed
d)
shows the flow of electricity
33.
Would would best complete this circuit?
a)
A wire
b)
A switch
c)
A battery
d)
A light bulb
34.
Look at the picture.  Why won't the light bulb light up?
a)
The wires from the light bulb are not connected to the battery
b)
The switch is not closed to form a complete circuit 
c)
The wires from the light bulb are not connected to the switch 
d)
The wires from the battery are not connected to the switch 
35.

2 answers:

Open circuit or closed circuit?

Will the light bulb light up?

a)

Open circuit

b)

Closed circuit

c)

Light bulb WILL light up

d)

Light bulb WILL NOT light up

36.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

37.

This is an example of a -------- circuit.

a)

Series

b)

Parallel

c)

Combination

38.

In this circuit, the bulb(s) that light up are:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

39.

In this circuit, the bulb(s) that light up are:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

40.

The bulbs have the same resistance. The brightest bulb in this circuit is:

a)

1 only

b)

2 only

c)

Same brightness

d)

None of them

41.

The bulbs have the same resistance. The brightest bulb is:

a)

1 only

b)

2 only

c)

1 and 2

d)

None of them

42.

This circuit will work.

a)

Yes

b)

No

43.

What is another term for potential difference

a)

Resistance

b)

Current

c)

Voltage

d)

Charge

44.

What do we measure potential difference in

a)

Amps

b)

Coulombs

c)

Ohms

d)

Volts

45.

What do we measure potential difference with

a)

Ammeter

b)

Voltmeter

46.

How do we connect a voltmeter

a)

In parallel

b)

In series

47.
As the resistance of a circuit increases, the current will
a)
increase
b)
decrease
c)
stay the same
48.

Resistance is

a)

Measured using an ammeter

b)

Units are 'volts'

c)

How difficult it is for electrons to move through an object

d)

The continuous movement of electrons in a wire

49.

A conductor has _____ resistance. An insulator has ______ resistance.

a)

Low; high.

b)

Negative; positive.

c)

Positive, negative.

d)

High, low.

50.

A resistor

a)

Is the same as resistance

b)

Is connected to a circuit in parallel

c)

Is used in a circuit to control the amount of current

d)

Is not measured in ohms

51.

what is resistance measured in?

a)

volts

b)

ohms

c)

amps

d)

jouls

52.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
53.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
54.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
55.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

56.

Voltage divided by Current

(V / I)

a)

Current

b)

Power

c)

Resistance

d)

Watts

57.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
58.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
59.

True or False: A magnet is attracting when it pushes objects away from each other.

a)

True

b)

False

60.
Which way will the magnets move after they are released?
a)
Towards each other
b)
Away from each other
c)
Not enough information
61.
a)

Magnetic

b)

Not magnetic

62.

What will happen when these magnets are brought close together?

a)

They will attract each other.

b)

They will repel each other.

c)

They will stay the same.

63.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
64.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
65.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
66.

Where on a magnet is the magnetic force strongest?

a)

The Poles

b)

All over

c)

Middle

67.
What part of the magnet are the arrows pointing toward?
a)
The poles
b)
The middle
c)
The horseshoe 
d)
The top
68.

Earth is like a giant magnet due to....

a)

its liquid iron core

b)

the wind patterns of Coriolis Effect

c)

the alignment of the continents

d)

solar particles moving through the atmosphere

69.

What’s the most important function of Earth’s magnetic field?

a)

Earth's magnetic shield deflects asteroids and meteors

b)

Earth's magnetic shield keeps energy from escaping into space

c)

Earth's magnetic shield deflects most of the solar wind

d)

Earth's magnetic shield helps birds and other animals navigate

70.

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

71.

Electric currents produce _____________

a)

electron clouds

b)

magnetic fields

c)

sound waves

72.

A magnet is defined as

a)

the force between two opposite poles

b)

any material that has a magnetic field

c)

the electron cloud surrounding an object

73.

How can the strength of an electromagnet be increased? (mark all that apply)

a)

increase the current flowing through the coil

b)

increase the number of coils

c)

add an amplifier to it

d)

put iron core inside the coil

74.

What happens to the compass when the wire is connected to the battery?

a)

Nothing happens to the compass

b)

The compass is repelled from the wire and it goes flying

c)

The compass starts to spin around endlessly

d)

The compass changes direction due to the magnetic field from the wire

75.

What generates a magnetic field?

a)

A moving electrical charge

b)

A piece of steel

c)

A cell phone

d)

A permanent magnet

76.

How can you make an electromagnet?

a)

Wrapping a large coil of wire around a permanent bar magnet

b)

Letting a wire stick to the side of a bar magnet

c)

Wrapping a large coil wire around a ferromagnetic material and connecting to a battery

77.

Which electromagnet is stronger?

a)

A

b)

B

78.

Which of these bests describes an electromagnet?

a)

A permanent magnet made from electric currents.

b)

A temporary magnet made from electric currents.

c)

A temporary magnet made from magnetic currents.

79.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
80.

How can you test to see if there is a current running through a wire?

a)

listen carefully to see if you hear a buzzing sound

b)

place several compasses around the wire

c)

place several batteries around the wire

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