Question 1

The rate at which a transformer transfers energy is called

Accepted Answer

A) electromagnetic induction. 
B) transformer efficiency. 
C) power. 
A) electromagnetic induction. 
B) transformer efficiency. 
C) power.

Question 2

When an electron passes through the magnetic field of a horseshoe magnet,the electron's

Accepted Answer

A) speed is increased. 
B) direction of motion is changed. 
C) both of these 
D) none of the above 
A) speed is increased. 
B) direction of motion is changed. 
C) both of these 
D) none of the above

Question 3

Which of these singly ionized atoms of the same speed will curve most in a magnetic field?

Accepted Answer

A) helium 
B) iron 
C) uranium 
D) all the same 
A) helium 
B) iron 
C) uranium 
D) all the same

Question 4

Fred swings a sheet of copper in pendulum fashion between the poles of a strong magnet.The sheet slows in entering the magnetic field because the field

Accepted Answer

A) induces swirling currents in the copper and accompanying magnetic fields that resist motion. 
B) experiences both air and magnetic friction. 
C) is repelled by free electrons in the copper. 
D) none of the above 
A) induces swirling currents in the copper and accompanying magnetic fields that resist motion. 
B) experiences both air and magnetic friction. 
C) is repelled by free electrons in the copper. 
D) none of the above

Question 5

In the field induction credited to Maxwell,wires

Accepted Answer

A) can be insulated or non-insulated. 
B) are minimized. 
C) are not needed. 
A) can be insulated or non-insulated. 
B) are minimized. 
C) are not needed.

Question 6

An iron rod becomes magnetic when

Accepted Answer

A) opposite ions accumulate at each end. 
B) its atoms are aligned. 
C) the net spins of many internal electrons are aligned. 
D) its electrons stop moving and point in the same direction. 
A) opposite ions accumulate at each end. 
B) its atoms are aligned. 
C) the net spins of many internal electrons are aligned. 
D) its electrons stop moving and point in the same direction.

Question 7

Every magnet contains at least

Accepted Answer

A) one pole. 
B) two poles. 
C) four poles. 
A) one pole. 
B) two poles. 
C) four poles.

Question 8

The discovery of electromagnetic induction is credited to

Accepted Answer

A) Joseph Henry in America. 
B) Michael Faraday in England. 
C) both of these 
D) none of the above 
A) Joseph Henry in America. 
B) Michael Faraday in England. 
C) both of these 
D) none of the above

Question 9

Superconducting electromagnets

Accepted Answer

A) account for cases of magnetic levitation. 
B) are characterized by easy penetration of external magnetic fields. 
C) both of these 
D) none of the above 
A) account for cases of magnetic levitation. 
B) are characterized by easy penetration of external magnetic fields. 
C) both of these 
D) none of the above

Question 10

Surrounding every moving electron is

Accepted Answer

A) a magnetic field. 
B) an electric field. 
C) both of these 
D) neither of these 
A) a magnetic field. 
B) an electric field. 
C) both of these 
D) neither of these

The rate at which a transformer transfers energy is called

When an electron passes through the magnetic field of a horseshoe magnet,the electron's

Which of these singly ionized atoms of the same speed will curve most in a magnetic field?

Fred swings a sheet of copper in pendulum fashion between the poles of a strong magnet.The sheet slows in entering the magnetic field because the field

In the field induction credited to Maxwell,wires

An iron rod becomes magnetic when

Every magnet contains at least

The discovery of electromagnetic induction is credited to

Superconducting electromagnets

Surrounding every moving electron is

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

Static and Current Electricity

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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Exam 9: Magnetism and Electromagnetic Induction

The rate at which a transformer transfers energy is called

When an electron passes through the magnetic field of a horseshoe magnet,the electron's

Which of these singly ionized atoms of the same speed will curve most in a magnetic field?

Fred swings a sheet of copper in pendulum fashion between the poles of a strong magnet.The sheet slows in entering the magnetic field because the field

In the field induction credited to Maxwell,wires

An iron rod becomes magnetic when

Every magnet contains at least

The discovery of electromagnetic induction is credited to

Superconducting electromagnets

Surrounding every moving electron is

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

Static and Current Electricity

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

Filters