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WorksheetsSci Mat-Electricity Review
Total questions: 39
Worksheet time: 57mins
Name
Class
Date
1.
Two like charges
a)
neutralize each other.
b)
repel each other.
c)
must be neutrons.
d)
attract each other.
2.
The charge of an electron is
a)
positive.
b)
negative.
c)
Electrons have no charge
3.
An atom loses an electron. What type of charge does it have now?
a)
positive
b)
negative
4.
An atom gains an electron. What type of charge does it have now?
a)
positive
b)
negative
c)
No charge
5.
When a balloon is rubbed on clothes it acquires a charge by ___________
a)
Induction
b)
reduction
c)
friction
d)
concuction
6.
Which of the following is not a good conductor of electricity?
a)
copper
b)
silver
c)
Glass
d)
aluminum
7.
Which of the following is not a good insulator?
a)
Copper
b)
Glass
c)
rubber
d)
wool
8.
The law of conservation of charge states that...
a)
all atoms have more protons than electrons
b)
only protons can be rubbed off of an atom
c)
charge cannot be created or destroyed
d)
charge cannot be transferred
9.
What are the two types of charges that objects may possess?
a)
+ and +
b)
+ and -
c)
+ and neutral
d)
- and neutral
10.
What is it called when an object gains a charge when touched by a charged object?
a)
Induction
b)
ESD
c)
Conduction
d)
Conducting path
11.
What is it called when an object gains a charge without touching a charged object but by being held near the charged object?
a)
Induction
b)
ESD
c)
Conduction
d)
Conducting path
12.
What is the overall charge on this balloon? (They are the same so look at either one!)
a)
+3
b)
-6
c)
+6
d)
-3
13.
Good conductors
a)
have electrons free to move around
b)
have electrons tightly bound
c)
do not have electrons
14.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
15.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
16.
Is the circuit pictured complete or incomplete?
a)
Complete
b)
Incomplete
17.
What kind of circuit is this?
a)
Series
b)
Consecutive
c)
Parallel
d)
Training
18.
What kind of circuit is this?
a)
series
b)
parallel
19.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
20.
What is a benefit of using a parallel circuit?
a)
It gets confusing.
b)
There are no problems.
c)
If one light goes out, it does not affect the others.
d)
If one light goes out, they all go out.
21.
A flow of electrons through a conductor is called:
a)
A river
b)
A spark
c)
An electron flow
d)
A current
22.
In a parallel circuit if one of the light bulbs burns out the rest _________.
a)
stop the flow of electricity
b)
can still light up
c)
will go out
d)
of the light bulbs burn out also
23.
If you wrap more coils around an electromagnet, it will become...
a)
brighter
b)
stronger
c)
weaker
d)
invisible
24.
A device that converts kinetic energy into electrical energy
a)
A. electric generator
b)
B. electric motor
c)
C. electromagnetic induction
d)
D. electricity
25.
What is created when a wire moves between the poles of a magnet?
a)
A. a ferromagnet
b)
B. a solenoid
c)
C. an electromagnet
d)
D. an electric current
26.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.
c)
C. magnet.
d)
D. transformer.
27.
How can an electric current be created by in wire without a battery?
a)
Having a magnet near by
b)
Moving a magnet near a wire
c)
Spinning the wire
d)
Not possible without a battery
28.
This is the symbol for a _____?
a)
switch
b)
light
c)
battery
d)
wires
29.
This is the symbol for a _____?
a)
an AC current source
b)
a DC current source
c)
a battery
d)
a single cell
30.
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.
31.
A fifth grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?
a)
plastic straw
b)
cotton string
c)
aluminum foil
d)
rubber eraser
32.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
33.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
34.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
35.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
36.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
37.
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
38.
What voltage is needed to cause a 5A current flow through a 2Ω resistor?
a)
10V
b)
2.5V
c)
7V
d)
0.4V
39.
If the battery produced 12.6 Volts and what would be the current flow be for a 6 Ohm resistor
a)
2.1 Amps
b)
2.4 Amps
c)
1.71 Amps
d)
15 Amps
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