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WorksheetsElectricity and Magnetism
Total questions: 66
Worksheet time: 59mins
Name
Class
Date
1.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
2.
What happens when a wire is wound into a coil around an iron core in an electromagnet?
a)
the wire exolodes
b)
you get electricuted
c)
the magnetic field becomes stronger
d)
the magnetic field becomes weaker
3.
While electric current is flowing through a wire, what surrounds the wire?
a)
a magnetic field
b)
a glowing light
c)
neutrons
d)
protons
4.
How do you make an electromagnet?
a)
wrap a battery in wire and connect it to an iron nail.
b)
wrap a wire with another wire and connect it to an iron nail.
c)
wrap an iron nail in wire and connect it to a power source.
d)
wrap an iron nail in wire and connect it to another iron nail.
5.
What are three ways to make an electromagnet stronger?
a)
1. add more coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thinner wire around the core
2. add more electricity flowing through the wire
3. wrap a thinner wire around the core
b)
1. add less coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thinker wire around the core
2. add more electricity flowing through the wire
3. wrap a thinker wire around the core
c)
1. add more coils of wire around the iron core
2. add less electricity flowing through the wire
3. wrap a thicker wire around the core
2. add less electricity flowing through the wire
3. wrap a thicker wire around the core
d)
1. add more coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thicker wire around the core.
2. add more electricity flowing through the wire
3. wrap a thicker wire around the core.
6.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
7.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
8.
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
9.
What is magnetism?
a)
Energy created by magnets
b)
A force created by magnets
c)
A contact force
d)
An invisible force that attracts electrically charged particles
10.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
11.
What is the name of the force that attracts or repels materials?
a)
current
b)
electricity
c)
magnetism
12.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
13.
If I were to try to connect the North pole of one magnet to the North pole of another magnet, the two poles would:
a)
attract
b)
repel
c)
neither
14.
If I were to try to connect the North pole of one magnet to the South pole of another magnet, the two poles would:
a)
attract
b)
repel
c)
neither
15.
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)
electric, wire, iron
c)
iron, electric, wire
16.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
17.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
18.
In order to make an electromagnet, you need a
a)
battery, nail, and magnet
b)
battery, wire, and nail
c)
magnet, nail, and wire
d)
all of the above
19.
What type of magnet does the Earth act like?
a)
giant bar magnet
b)
giant temporary magnet
c)
giant electromagnet
d)
small, weak magnet
20.
Where are the field lines most concentrated around a bar magnet?
a)
at the north pole only
b)
in the middle
c)
at both the north and the south poles
21.
The bottom magnets will...
a)
Attract
b)
Repel
c)
Not apply a force
22.
The top magnets will...
a)
Attract
b)
Repel
c)
Not apply a force
23.
Why are electromagnets better than permanent magnets?
a)
They can attract all metals, not just iron.
b)
They can attract copper, permanent magnets can't.
c)
They can turn on and off.
d)
They can never run out of energy, because they don't run on electricity.
24.
Are the magnetic field lines in the picture correct?
a)
Yes, because they point from north to south.
b)
No, because they point from north to south (they're supposed to go the other way).
c)
Yes, because the North pole is on the left in all pictures.
d)
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
25.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
26.
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.
27.
Why are metals useful for making electrical wire?
a)
Metals do not bend.
b)
Metals hold much heat.
c)
Metals are insulators.
d)
Metals are conductors.
28.
Which is NOT an insulator.
a)
Wool
b)
Plastic
c)
Copper
d)
Glass
29.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
30.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
31.
An electrical current produces a(n):
a)
magnetic field
b)
magnetic domains
c)
electrical resistance
d)
both b& c are correct
32.
Electromagnets are often used:
a)
in compasses
b)
a device on the end of a crane used to lift scrap metal
c)
in insulators
d)
in solar heaters
33.
Pick the correct sentence.
a)
This circuit will work because it is a closed circuit.
b)
Energy will freely flow in this circuit.
c)
This circuit will not work because there is no energy source.
d)
This circuit will not work because there is no switch.
34.
A battery is connected to a resistor. Increasing the resistance of the resistor will
a)
increase the current in the circuit
b)
decrease the current in the circuit
c)
not effect the current in the circuit
35.
A magnet's magnetic field exists ________.
a)
Only on the north pole
b)
Only on the south pole
c)
On both poles
d)
Around the entire magnet
36.
A pathway for electricity to travel is called___________
a)
current
b)
static electrcity
c)
circuit
d)
circle
37.
A continuous flow of electricity is called_____________
a)
series
b)
circuit
c)
static
d)
current
38.
Which of the following statements is true about Earth’s magnetic poles?
a)
They are the areas where Earth’s magnetic field is strongest.
b)
They are located at Earth’s geographic poles.
c)
They are the areas where Earth’s magnetic field is weakest.
d)
Earth has four magnetic poles.
39.
If you cut a bar magnet in half, each half
a)
becomes unmagnetized.
b)
becomes a bar magnet with two poles.
c)
contains one magnetic pole.
d)
is only temporarily magnetized.
40.
Circuits in homes are usually wired in
a)
series.
b)
parallel.
c)
aluminum wire.
d)
series with a fuse.
41.
What's an insulator?
a)
A. A material that allows electrons to pass through easily
b)
B. A material that DOESN'T allow energy to pass through easily
c)
C. Glass
d)
D. B & C
42.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
43.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
44.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
45.
What particle has a negative charge?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
46.
If you decreases the resistance of a circuit, what happens?
a)
Current decreases
b)
Current increases
c)
Electrons disappear
d)
Bulbs get brighter
47.
What kind of circuit is this?
a)
series
b)
parallel
48.
wood is a _____?
a)
conductor
b)
insulator
49.
brass is a _____?
a)
insulator
b)
conductor
50.
A material in which electrons are able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
51.
A material in which electrons are not able to move easily
a)
Circuit
b)
Insulator
c)
Resistance
d)
Conductor
52.
This circuit has more than one loop. When one light goes out, the others stay on.
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
53.
Which statement 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 up because the circuit is complete.
d)
The light bulb will not light up because the circuit is broken.
54.
What type of circuit is pictured?
a)
A. alternating
b)
B. overloaded
c)
C. parallel
d)
D. series
55.
What type of circuit is pictured?
a)
A. alternating
b)
B.overloaded
c)
C.parallel
d)
D. series
56.
what kind of circuit is this?
a)
parallel
b)
series
c)
chris barton
d)
open
57.
this is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
58.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
59.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
60.
In a parallel circuit, if one connection is broken, all of the connections stop working.
a)
True
b)
False
61.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Rubber Gloves
62.
A circuit in which energy can freely flow.
a)
Closed Circuit
b)
Free Circuit
c)
Open Circuit
d)
Energy Circuit
63.
Choose the corrrect sentence.
a)
This circuit will work because it is an open circuit
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
64.
Choose the correct sentence.
a)
This circuit will work because it is an open circuit.
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
65.
Would would best complete this circuit?
a)
A wire
b)
A switch
c)
A battery
d)
A light bulb
66.
Would would best complete this circuit?
a)
A wire
b)
A switch
c)
A battery
d)
A light bulb
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