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WorksheetsElectricity
Total questions: 40
Worksheet time: 30mins
Name
Class
Date
1.
A switch that opens a circuit by turning itself off is a...
a)
circuit breaker
b)
motor
c)
electromagnet
d)
insulator
2.
A circuit that has more than one path for electricity to follow is a...
a)
series
b)
static
c)
broken
d)
parallel
3.
Copper is used in wiring because it is an excellent______________ of electricity.
a)
circuit breaker
b)
conductor
c)
insulator
d)
fuse
4.
When a switch is turned on, you close a circuit so that it is___________.
a)
incomplete
b)
inactive
c)
complete
d)
broken
5.
The only charges that can move from one object to another are___________ charges.
a)
electric
b)
neutral
c)
positive
d)
negative
6.
If you take one light bulb out of a parallel circuit, all the lights will go out.
a)
true
b)
false
7.
Protons have a negative charge and electrons have a positive charge.
a)
true
b)
false
8.
The buildup of electric charges on an object is called static electricity.
a)
true
b)
false
9.
Which of the following is not a source of electricity
a)
Windmills
b)
Batteries
c)
wires
d)
Hydroelectric dams
10.
What is the unit of measurement for current
a)
Ohm's
b)
Amperes
c)
Volts
11.
In a parallel circuit with 2 lightbulbs, if you take out one lightbulb what will happen to the rest?
a)
They will all go out.
b)
The other one will stay on
12.
What kind of circuit does the picture show?
a)
Series Circuit
b)
Parallel Circuit
13.
What kind of picture does the picture show?
a)
Closed/Complete
b)
Open/Incomplete
14.
What kind of circuit dow the picture show?
a)
Parallel Circuit
b)
Series Circuit
15.
In an electrical circuit, what does this symbol represent?
a)
wire
b)
resistor
c)
lightbulb
d)
switch
16.
What kind of circuit does the picture show?
a)
Series
b)
Parallel
17.
What is the unit of measurement for resistance?
a)
Amperes
b)
Ohm's
c)
Volts
18.
What is static electricity?
a)
the flow of electric charges
b)
the build-up of an electrical charge on a surface.
c)
the opposition of current flow.
19.
In a series circuit what happens when you add another bulb?
a)
The bulbs gets brighter
b)
The bulbs gets dimmer
c)
Nothing changes
20.
Lightning is an example of _________.
a)
static electricity
b)
current electricity
c)
watts
d)
voltage
21.
What is a closed path for electrons to flow through?
a)
static electricity
b)
circuit
c)
amperes
22.
Identify the conductor below.
a)
cloth rag
b)
plastic bottle
c)
gold ring
23.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
24.
Thicker wires have _______ resistance than thinner wires.
a)
more
b)
less
c)
the same
25.
Electric current is measured in ______.
a)
Watts
b)
Volts
c)
Amperes
26.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
27.
Which formulas represents Ohm's law?
a)
V=IR
b)
R=IV
c)
I=RV
28.
Which subatomic particles have a positive charge?
a)
neutrons
b)
electrons
c)
protons
29.
An accumulation of electrons on an object is known as ___________.
a)
current
b)
AC
c)
static electricity
30.
What is the unit for resistance?
a)
Volts
b)
Amperes
c)
Ohms
31.
How many volts are in a circuit with a battery that has a resistance of 10 Ohms and a current of 2 Amps?
a)
.5 Volts
b)
5 Volts
c)
20 Volts
32.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
33.
What type of circuit is pictured?
a)
series
b)
Parallel
34.
Which type of current comes from a battery?
a)
alternating current (AC)
b)
direct current (DC)
35.
Which will not allow electrical current to flow?
a)
a closed circuit
b)
an open current
c)
a series circuit
d)
a parallel circuit
36.
When objects have equal numbers of positive and negative charges, they are
a)
positively charged
b)
negatively charged
c)
electrically neutral
d)
unbalanced
37.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
38.
Like charges ...
a)
attract each other
b)
repel each other
c)
stabilize each other
d)
are not attracted or repelled
39.
A disadvantage of a parallel circuit is:
a)
the current increases with each appliance and can over heat the circuit
b)
If one appliance goes off, they all go off
c)
As you add appliances, the resistance increases (the bulbs get dimmer)
40.
The buildup of excess electric charge on an object is called:
a)
positive charge/amps
b)
static electricity/voltage
c)
negative charge/resistance
d)
static discharge
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