Question 1

The amount of current in a CFL rated 23W-120V is about

Accepted Answer

A) 0.2A. 
B) 5.2A. 
C) more than 5.2A. 
A) 0.2A. 
B) 5.2A. 
C) more than 5.2A.

Question 2

As you comb your hair,electrons are rubbed onto the comb,which becomes

Accepted Answer

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

Question 3

A sustained flow of electric charge requires

Accepted Answer

A) a potential difference. 
B) a resistance. 
C) an electric field. 
D) electric polarization. 
A) a potential difference. 
B) a resistance. 
C) an electric field. 
D) electric polarization.

Question 4

A 60-W bulb and a 100-W bulb are connected in series in a circuit.Which draws more current? Which draws more current when connected in parallel?

Accepted Answer

Both bulbs connected in series have the

Question 5

When two bulbs are connected in series to a battery,the electric resistance that the battery senses is

Accepted Answer

A) greater than the resistance of either bulb. 
B) less than the resistance of either bulb. 
C) none of the above 
A) greater than the resistance of either bulb. 
B) less than the resistance of either bulb. 
C) none of the above

Question 6

The amount of current in an LED bulb rated 10.5W-120V is

Accepted Answer

A) less than 1 A. 
B) about 1 A. 
C) more then 1 A. 
A) less than 1 A. 
B) about 1 A. 
C) more then 1 A.

Question 7

Direct current is normally produced by a

Accepted Answer

A) battery. 
B) generator. 
C) both of these 
D) neither of these 
A) battery. 
B) generator. 
C) both of these 
D) neither of these

Question 8

The electric resistance of a superconductor is

Accepted Answer

A) zero. 
B) infinite. 
C) usually lower than ordinary resistors. 
D) none of the above 
A) zero. 
B) infinite. 
C) usually lower than ordinary resistors. 
D) none of the above

Question 9

An ampere is a unit of electric

Accepted Answer

A) pressure. 
B) current. 
C) resistance. 
D) all of the above 
E) none of the above 
A) pressure. 
B) current. 
C) resistance. 
D) all of the above 
E) none of the above

Question 10

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 11

The origin of the glow from the filament inside the ac incandescent lamp in your bedroom is

Accepted Answer

A) electrons resupplied by the wall outlet. 
B) electrons already in the filament. 
C) the positive charges that flow in the filament. 
D) resistance in the filament. 
A) electrons resupplied by the wall outlet. 
B) electrons already in the filament. 
C) the positive charges that flow in the filament. 
D) resistance in the filament.

Question 12

Which of these scientists pioneered the study of electricity?

Accepted Answer

A) Isaac Newton 
B) Galileo 
C) Benjamin Franklin 
D) all of the above 
A) Isaac Newton 
B) Galileo 
C) Benjamin Franklin 
D) all of the above

Question 13

A proton and an electron placed in an electric field experience the same force.Which undergoes the greater acceleration?

Accepted Answer

A) electron 
B) proton 
C) both equally 
D) none of the above 
A) electron 
B) proton 
C) both equally 
D) none of the above

Question 14

Compared to a single lamp connected to a battery,two identical lamps connected in series to the same battery will draw

Accepted Answer

A) more current. 
B) less current. 
C) the same current. 
A) more current. 
B) less current. 
C) the same current.

Question 15

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

Accepted Answer

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

Question 16

Food cooked in a microwave oven depends on electrical

Accepted Answer

A) conduction. 
B) charge polarization. 
C) resistance changes. 
D) field strength. 
E) all of the above 
A) conduction. 
B) charge polarization. 
C) resistance changes. 
D) field strength. 
E) all of the above

Question 17

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

Accepted Answer

A) electrons that surround the nucleus. 
B) neutrons in the nucleus. 
C) both of these 
D) none of the above 
A) electrons that surround the nucleus. 
B) neutrons in the nucleus. 
C) both of these 
D) none of the above

Question 18

When Eddie Electron experiences an electrical shock,the source of electrons composing the shock is

Accepted Answer

A) the ground beneath Eddie's feet. 
B) Eddie's body. 
C) the power plant. 
D) whatever electric device being handled. 
E) electric field in the air. 
A) the ground beneath Eddie's feet. 
B) Eddie's body. 
C) the power plant. 
D) whatever electric device being handled. 
E) electric field in the air.

Question 19

When two light bulbs are connected in parallel to a battery,the electric resistance that the battery senses is

Accepted Answer

A) greater than the resistance of either bulb. 
B) less than the resistance of either bulb. 
C) none of the above 
A) greater than the resistance of either bulb. 
B) less than the resistance of either bulb. 
C) none of the above

Question 20

A balloon will stick to a wooden wall if the balloon is charged

Accepted Answer

A) negatively. 
B) positively. 
C) either of these 
D) none of the above 
A) negatively. 
B) positively. 
C) either of these 
D) none of the above

Exam 8: Static and Current Electricity

The amount of current in a CFL rated 23W-120V is about

As you comb your hair,electrons are rubbed onto the comb,which becomes

A sustained flow of electric charge requires

A 60-W bulb and a 100-W bulb are connected in series in a circuit.Which draws more current? Which draws more current when connected in parallel?

When two bulbs are connected in series to a battery,the electric resistance that the battery senses is

The amount of current in an LED bulb rated 10.5W-120V is

Direct current is normally produced by a

The electric resistance of a superconductor is

An ampere is a unit of electric

The unit of resistance is named after

The origin of the glow from the filament inside the ac incandescent lamp in your bedroom is

Which of these scientists pioneered the study of electricity?

A proton and an electron placed in an electric field experience the same force.Which undergoes the greater acceleration?

Compared to a single lamp connected to a battery,two identical lamps connected in series to the same battery will draw

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

Food cooked in a microwave oven depends on electrical

In an electrically neutral atom the number of protons in the nucleus is equal to the number of

When Eddie Electron experiences an electrical shock,the source of electrons composing the shock is

When two light bulbs are connected in parallel to a battery,the electric resistance that the battery senses is

A balloon will stick to a wooden wall if the balloon is charged

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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