Physical Science, New York Edition

Chapter 7: Electricity

Standardized Test Practice

1.
Which of these is necessary in order to make an electric circuit?
A)a battery
B)copper wires
C)a light bulb
D)a closed path
2.
What is the current flowing through this circuit?

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A)1.25A
B)0.80 A
C)30 A
D)120 A
3.
What is the power consumed by the lightbulb in this circuit?

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A)96 W
B)1.25 W
C)1.25 kW
D)96 kW
4.
Which of the following substances is an electrical conductor?
A)glass
B)paper
C)gold
D)rubber
5.
The electrical energy used in your house is 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 _______.

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A)broken circuit
B)open circuit
C)parallel circuit
D)series circuit
8.
The total current flow in this circuit is _______.

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A)0.52 A
B)0.96 A
C)2.3 A
D)1.9 A
9.
Which of the following factors decreases the resistance of a piece of wire?
A)drawing it into a longer, thinner wire
B)placing it in the freezer
C)heating it in an oven
D)shaping it as a coil
10.
What is the purpose of the moist paste in this battery?

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A)to transfer electrons to the zinc container
B)to transfer electrons to the carbon rod
C)to insulate the carbon rod
D)to transfer electrons to the positive terminal
Physical Science - New York Edition
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