Question 1

A pair of 1-ohm resistors connected in series has a combined resistance of

Accepted Answer

A) 1 ohm. 
B) 2 ohms. 
C) 1/2 ohm. 
D) none of the above 
A) 1 ohm. 
B) 2 ohms. 
C) 1/2 ohm. 
D) none of the above

Question 2

A compact fluorescent lamp gives more light output for

Accepted Answer

A) less power. 
B) the same power. 
C) greater resistance. 
A) less power. 
B) the same power. 
C) greater resistance.

Question 3

Two charged particles repel each other will a force F. If the charge on one particle is doubled and the distance between them is doubled, the force will be

Accepted Answer

A) F. 
B) 2 F. 
C) F/2. 
D) F/4. 
E) none of the above 
A) F. 
B) 2 F. 
C) F/2. 
D) F/4. 
E) none of the above

Question 4

When we talk about electric power we're talking

Accepted Answer

A) joules per second. 
B) watts. 
C) both 
D) neither 
A) joules per second. 
B) watts. 
C) both 
D) neither

Question 5

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

Accepted Answer

A) may occur 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) may occur 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 6

Compared to the mass of a proton, the mass of the electron is

Accepted Answer

A) very much less. 
B) identical. 
C) greater. 
A) very much less. 
B) identical. 
C) greater.

Question 7

Heat a copper wire and its electric resistance

Accepted Answer

A) decreases. 
B) remains unchanged. 
C) increases. 
A) decreases. 
B) remains unchanged. 
C) increases.

Question 8

Which has the thicker lamp filament, a 60-W incandescent bulb or a 100-W incandescent bulb?

Accepted Answer

The 100-W bulb has less resistance and a

Question 9

The headlights, radio, and defroster fan in an automobile are connected in

Accepted Answer

A) series. 
B) parallel. 
C) order of energy efficiency. 
A) series. 
B) parallel. 
C) order of energy efficiency.

Question 10

Distinguish between ac and dc. When you plug a light bulb into a wall outlet, where is the source of electrons?

Accepted Answer

AC is alternating current, where electro

Question 11

Compared to the work input to charge an electrostatic generator, the energy output is

Accepted Answer

A) less. 
B) more. 
C) no more. 
A) less. 
B) more. 
C) no more.

Question 12

One main difference between gravitational and electric forces is that electric forces

Accepted Answer

A) attract. 
B) repel or attract. 
C) obey the inverse-square law. 
D) act over shorter distances. 
E) are weaker. 
A) attract. 
B) repel or attract. 
C) obey the inverse-square law. 
D) act over shorter distances. 
E) are weaker.

Question 13

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 14

The electric charge on a current-carrying wire is normally

Accepted Answer

A) zero. 
B) equal and opposite to the charge within the wire. 
C) the voltage divided by the resistance. 
A) zero. 
B) equal and opposite to the charge within the wire. 
C) the voltage divided by the resistance.

Question 15

The unit of resistance is named after

Accepted Answer

A) Isaac Newton. 
B) Benjamin Franklin. 
C) Georg Simon Ohm. 
D) Micheal Faraday. 
E) Charles Coulomb. 
A) Isaac Newton. 
B) Benjamin Franklin. 
C) Georg Simon Ohm. 
D) Micheal Faraday. 
E) Charles Coulomb.

Question 16

A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can then becomes

Accepted Answer

A) positively charged. 
B) negatively charged. 
C) uncharged. 
A) positively charged. 
B) negatively charged. 
C) uncharged.

Question 17

Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is

Accepted Answer

A) definitely less. 
B) often less. 
C) actually more. 
D) the same. 
E) incredibly, all of the above 
A) definitely less. 
B) often less. 
C) actually more. 
D) the same. 
E) incredibly, all of the above

Question 18

The electric field around an isolated electron has a certain strength 1 cm from the electron. The electric field strength 2 cm from the electron is

Accepted Answer

A) half as much. 
B) the same. 
C) twice as much. 
D) four times as much. 
E) none of the above 
A) half as much. 
B) the same. 
C) twice as much. 
D) four times as much. 
E) none of the above

Question 19

Measurements show there is an electric field surrounding the Earth. Its magnitude averages 100 N/C at the Earth's surface and it points inward toward the Earth's center. From this information, state whether the Earth is negatively or positively charged. Defend your answer.

Accepted Answer

The Earth is negatively charged. If it w

Question 20

Which statement is correct?

Accepted Answer

A) voltage flows through a circuit 
B) voltage flows across a circuit 
C) voltage is impressed across a device in a circuit 
A) voltage flows through a circuit 
B) voltage flows across a circuit 
C) voltage is impressed across a device in a circuit

Exam 8: Static and Current Electricity

A pair of 1-ohm resistors connected in series has a combined resistance of

A compact fluorescent lamp gives more light output for

Two charged particles repel each other will a force F. If the charge on one particle is doubled and the distance between them is doubled, the force will be

When we talk about electric power we're talking

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

Compared to the mass of a proton, the mass of the electron is

Heat a copper wire and its electric resistance

Which has the thicker lamp filament, a 60-W incandescent bulb or a 100-W incandescent bulb?

The headlights, radio, and defroster fan in an automobile are connected in

Distinguish between ac and dc. When you plug a light bulb into a wall outlet, where is the source of electrons?

Compared to the work input to charge an electrostatic generator, the energy output is

One main difference between gravitational and electric forces is that electric forces

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

The electric charge on a current-carrying wire is normally

The unit of resistance is named after

A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can then becomes

Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is

The electric field around an isolated electron has a certain strength 1 cm from the electron. The electric field strength 2 cm from the electron is

Measurements show there is an electric field surrounding the Earth. Its magnitude averages 100 N/C at the Earth's surface and it points inward toward the Earth's center. From this information, state whether the Earth is negatively or positively charged. Defend your answer.

Which statement is correct?

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 Timereading 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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