Glencoe Science Level Red

Chapter 7: Electricity and Magnetism

Standardized Test Practice

1
Which of the following attract each other?
A)two neutrons
B)proton and electron
C)two protons
D)neutron and electron
2
Which two circuits have the same total resistance?

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A)Circuits 1 and 2
B)Circuits 1 and 4
C)Circuits 2 and 3
D)Circuits 3 and 4
3
What is the total resistance of circuit 1?

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A)30 Ω
B)0.03 Ω
C)0.1 Ω
D)10 Ω
4
After electrons are transferred from glass to silk, which of the following is true about the glass and silk?
A)They repel each other.
B)They exert no force on each other.
C)They remain electrically neutral.
D)They attract each other.
5
Which of the following is a good electrical conductor?
A)silver
B)wood
C)plastic
D)rubber
6
Which of the following is an example of charge by induction?
A)bringing your negatively-charged hand near a doorknob
B)rubbing a balloon against your hair
C)rubbing wool against teflon
D)walking across carpet with rubber-soled shoes
7
The battery in the circuit has a voltage of 12 V, and each lamp has a resistance of 34 Ω. If Lamp B burns out, what is current in the circuit?

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A)0.0 A
B)0.010 A
C)0.18 A
D)0.35 A
8
Which of the following describes an object that is positively charged?
A)It has more protons than electrons.
B)It has more neutrons than protons.
C)It has more protons than neutrons.
D)It has more electrons than protons.
9
The voltage of a battery in a circuit is increased from 2.5 V to 6.3 V. If the resistance in the circuit is 2.5 Ω, what is the change in the current?
A)1.0 A
B)2.0 A
C)2.5 A
D)1.5 A
10
What energy conversion takes place in a generator?
A)electrical to mechanical
B)mechanical to electrical
C)kinetic to mechanical
D)mechanical to kinetic
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