Question 1

When we say an appliance "uses up" electricity,we are actually saying that

Accepted Answer

A) current disappears. 
B) electric charges are dissipated. 
C) the main power supply voltage is lowered. 
D) electrons are taken out of the circuit and put somewhere else. 
E) electrical energy changes to thermal energy. 
A) current disappears. 
B) electric charges are dissipated. 
C) the main power supply voltage is lowered. 
D) electrons are taken out of the circuit and put somewhere else. 
E) electrical energy changes to thermal energy.

Question 2

A term for electric pressure is

Accepted Answer

A) current. 
B) voltage. 
C) electric resistance. 
A) current. 
B) voltage. 
C) electric resistance.

Question 3

Lillian safely touches a 100,000-volt Van de Graaff generator.Although the voltage is high,the relatively small amount of charge means a relatively small amount of

Accepted Answer

A) energy transfer. 
B) electric field. 
C) polarization. 
D) conduction. 
A) energy transfer. 
B) electric field. 
C) polarization. 
D) conduction.

Question 4

To say that electric charge is conserved is to say that electric charge

Accepted Answer

A) occurs in an infinite variety of quantities. 
B) is a whole-number multiple of the charge of one electron. 
C) will interact with neighboring electric charges. 
D) can neither be created nor destroyed. 
A) occurs in an infinite variety of quantities. 
B) is a whole-number multiple of the charge of one electron. 
C) will interact with neighboring electric charges. 
D) can neither be created nor destroyed.

Question 5

The current through a 10-ohm resistor connected to a 120-V power supply is

Accepted Answer

A) 1 A. 
B) 10 A. 
C) 12 A. 
D) 120 A. 
E) none of the above 
A) 1 A. 
B) 10 A. 
C) 12 A. 
D) 120 A. 
E) none of the above

Question 6

A positive and a negative charge near each other are released.As they move,the force on each particle

Accepted Answer

A) increases. 
B) decreases. 
C) stays the same. 
A) increases. 
B) decreases. 
C) stays the same.

Question 7

The equivalent (combined)resistance of 1-ohm,2-ohm,and 3-ohm in parallel is about

Accepted Answer

A) 0.06 ohm. 
B) 1 ohm. 
C) 1.8 ohms. 
D) 6 ohms. 
E) 9 ohms. 
A) 0.06 ohm. 
B) 1 ohm. 
C) 1.8 ohms. 
D) 6 ohms. 
E) 9 ohms.

Question 8

Every proton in the universe is surrounded by its own

Accepted Answer

A) electric field. 
B) gravitational field. 
C) both of these 
D) none of the above 
A) electric field. 
B) gravitational field. 
C) both of these 
D) none of the above

Question 9

As more lamps are put into a parallel circuit,the overall current in the power source

Accepted Answer

A) increases. 
B) decreases. 
C) remains the same. 
A) increases. 
B) decreases. 
C) remains the same.

Question 10

To say that an object is electrically polarized is to say

Accepted Answer

A) it is electrically charged. 
B) its charges have been rearranged. 
C) its internal electric field is zero. 
D) it is only partially conducting. 
E) it is to some degree magnetic. 
A) it is electrically charged. 
B) its charges have been rearranged. 
C) its internal electric field is zero. 
D) it is only partially conducting. 
E) it is to some degree magnetic.

Question 11

A rubber rod rubbed with fur becomes

Accepted Answer

A) positively charged. 
B) negatively charged. 
C) both 
D) neither 
A) positively charged. 
B) negatively charged. 
C) both 
D) neither

Question 12

The current in a 100-W bulb connected to a 120-V source is

Accepted Answer

A) 0.5 A. 
B) 1.2 A. 
C) 12,000 A. 
D) none of the above 
A) 0.5 A. 
B) 1.2 A. 
C) 12,000 A. 
D) none of the above

Question 13

An electron and a proton

Accepted Answer

A) attract each other. 
B) repel each other. 
C) attract or repel depending on distance. 
A) attract each other. 
B) repel each other. 
C) attract or repel depending on distance.

Question 14

If electrons were positive and protons were negative,Coulomb's law would be written

Accepted Answer

A) the same. 
B) somewhat differently. 
C) very differently. 
A) the same. 
B) somewhat differently. 
C) very differently.

Question 15

What is the difference between an insulator and a conductor of electricity? Give examples of each.

Accepted Answer

An insulator is any material composed of

Question 16

A coulomb of charge passing through a 6-V battery acquires

Accepted Answer

A) 6 joules. 
B) 6 amperes. 
C) 6 ohms. 
D) 6 watts. 
E) 6 newtons. 
A) 6 joules. 
B) 6 amperes. 
C) 6 ohms. 
D) 6 watts. 
E) 6 newtons.

Question 17

Which of these lamps is the longer lasting in a common circuit?

Accepted Answer

A) incandescent lamp 
B) compact fluorescent lamp 
C) light-emitting diode 
D) all about the same 
A) incandescent lamp 
B) compact fluorescent lamp 
C) light-emitting diode 
D) all about the same

Question 18

To achieve a high equivalent resistance for a pair of resistors,connect them in

Accepted Answer

A) series. 
B) parallel. 
C) either of these 
A) series. 
B) parallel. 
C) either of these

Question 19

Two lamps,a thick-filament one and a thin-filament one,are connected in series to a battery.The current is greater in the lamp with the

Accepted Answer

A) thick filament. 
B) thin filament. 
C) same in each 
A) thick filament. 
B) thin filament. 
C) same in each

Question 20

What is an electric current? How does it move in a wire? How fast do the electrons move?

Accepted Answer

Electric current is the flow of electric

Exam 8: Static and Current Electricity

When we say an appliance "uses up" electricity,we are actually saying that

A term for electric pressure is

Lillian safely touches a 100,000-volt Van de Graaff generator.Although the voltage is high,the relatively small amount of charge means a relatively small amount of

To say that electric charge is conserved is to say that electric charge

The current through a 10-ohm resistor connected to a 120-V power supply is

A positive and a negative charge near each other are released.As they move,the force on each particle

The equivalent (combined)resistance of 1-ohm,2-ohm,and 3-ohm in parallel is about

Every proton in the universe is surrounded by its own

As more lamps are put into a parallel circuit,the overall current in the power source

To say that an object is electrically polarized is to say

A rubber rod rubbed with fur becomes

The current in a 100-W bulb connected to a 120-V source is

An electron and a proton

If electrons were positive and protons were negative,Coulomb's law would be written

What is the difference between an insulator and a conductor of electricity? Give examples of each.

A coulomb of charge passing through a 6-V battery acquires

Which of these lamps is the longer lasting in a common circuit?

To achieve a high equivalent resistance for a pair of resistors,connect them in

Two lamps,a thick-filament one and a thin-filament one,are connected in series to a battery.The current is greater in the lamp with the

What is an electric current? How does it move in a wire? How fast do the electrons move?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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