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WorksheetsElectricity
Total questions: 25
Worksheet time: 39mins
Name
Class
Date
1.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
2.
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.
3.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from more than one source.
c)
Electricity flows along more than one pathway.
d)
The flow of electricity comes from more than 1 load.
4.
Which of the following is shown in the picture?
a)
Electromagnet
b)
Electric generator
c)
Electric motor
d)
Transformer
5.
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.
6.
The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.
a)
True
b)
False
7.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
8.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
9.
What is # 3 pointing to in the diagram?
a)
base contact
b)
button contact
c)
support wires
d)
filament
10.
Which is NOT an insulator.
a)
Wool
b)
Plastic
c)
Copper
d)
Glass
11.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
12.
An example of an insulator is:
a)
iron
b)
silver
c)
copper wire
d)
rubber
13.
An electrical current produces a(n):
a)
magnetic field
b)
magnetic domains
c)
electrical resistance
d)
both b& c are correct
14.
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
15.
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.
16.
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
17.
What is the name of the force that attracts or repels materials?
a)
current
b)
electricity
c)
magnetism
18.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
19.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
20.
While electric current is flowing through a wire, what surrounds the wire?
a)
a magnetic field
b)
a glowing light
c)
neutrons
d)
protons
21.
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
22.
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.
23.
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
24.
A pathway for electricity to travel is called___________
a)
current
b)
static electrcity
c)
circuit
d)
circle
25.
A continuous flow of electricity is called_____________
a)
series
b)
circuit
c)
static
d)
current
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