Standardized Test Practice
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
Electricity
1.Which of these is necessary in order to
make an electric circuit?
A.
a battery
B.
copper wire
C.
a light bulb
D.
a closed path
2.What is the current through this circuit?
A.
0.80 A
B.
1.25 A
C.
30 A
D.
120 A



3.What is the power consumed by the
lightbulb in this circuit?
A.
1.25 W
B.
96 W
C.
1.25 kW
D.
96 kW
4.Which of the following substances is an
electrical conductor?
A.
glass
B.
gold
C.
paper
D.
rubber
5.The electrical energy used in your house is
usually measured in units of _____.
A.
kilowatt hours
B.
amperes



C.
kilowatts
D.
watt hours
6.When one lightbulb in a string of bulbs
wired as a series circuit burns out, _____.
A.
the remaining lights glow brighter
B.
the remaining lights glow dimmer
C.
the remaining lights are unaffected
D.
all the lights go out
7.The illustration shows a(n) _____.
A.
broken circuit
B.
open circuit
C.
parallel circuit
D.
series circuit
8.The total current in this circuit is _____.


A.
0.52 A
B.
0.96 A
C.
1.9 A
D.
2.3 A
9.Electrical devices have resistance because
they _______.
A.
convert some thermal energy into
electrical energy
B.
convert some electrical energy into
thermal energy
C.
contain insulators
D.
are exposed to sunlight
10.What is the purpose of the moist paste in
this battery?
A.
B.
to transfer electrons to the carbon rod
C.
to insulate the carbon rod
D.


to transfer electrons to the zinc
container
to transfer electrons to the positive
terminal
11._____ is related to the push that causes
charges to move.
A.
Induction
B.
Resistance
C.
Static
D.
Voltage difference
12.Which of the following statements about
electrical charge is true?
A.
Electrical forces act at a distance.
B.
Objects must be touching one another
to exert electrical force.
C.
Air cannot conduct electricity; it is
conducted only by solid materials.
D.
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

Opposite electric charges always repel
one another.
13.The rate at which electrical energy is
converted to another form of energy.
A.
hydroelectricity
B.
energy transformation
C.
transmission
D.
electrical power
14.A(n) _____ is a closed, conducting path.
A.
ampere
B.
circuit
C.
current
D.
resistor
15.The law of conservation of charge states
that _____.
A.
charge is not created or destroyed or
transferred from object to object
B.
the mass of all substances present
before a chemical change equals the
mass of all the substances remaining
after the change
C.
electric charge is not created or
destroyed
D.
charge can be created and destroyed
but cannot be transferred
This is the end of the test. When you have
completed all the questions and reviewed your
answers, press the button below to grade the
test.
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