Question 1

Can a magnetic monopole ever be created from ordinary magnets? Why or why not?

Accepted Answer

No. The magnetism of a material is creat

Question 2

Which is not true based on Maxwell's equations?

Accepted Answer

A)  Like charges attract, unlike charges repel. 
B)  Coulomb's law applies to the equations. 
C)  There are no magnetic monopoles in nature. 
D)  Magnetic phenomena can be produced by electrical effects. 
E)  Electrical phenomena can be produced by magnetic effects. 
A)  Like charges attract, unlike charges repel. 
B)  Coulomb's law applies to the equations. 
C)  There are no magnetic monopoles in nature. 
D)  Magnetic phenomena can be produced by electrical effects. 
E)  Electrical phenomena can be produced by magnetic effects.

Question 3

How does a nerve in a living organism carry an electrical signal?

Accepted Answer

Positively and negatively charged ions m

Question 4

Electric fields and electric currents can be produced by

Accepted Answer

A)  changing magnetic fields. 
B)  radiation. 
C)  magnetic monopoles. 
D)  certain magnetic bacteria. 
E)  static electrical charges. 
A)  changing magnetic fields. 
B)  radiation. 
C)  magnetic monopoles. 
D)  certain magnetic bacteria. 
E)  static electrical charges.

Question 5

Compare alternating current with direct current. Give examples of each type of current.

Accepted Answer

Alternating current (AC) is a type of el

Question 6

Coulomb's law states that force is dependent on all the following except

Accepted Answer

A)  the Coulomb constant. 
B)  the sizes of the two objects. 
C)  the charge of the smaller object. 
D)  the distance between the two objects. 
E)  the charge of the larger object. 
A)  the Coulomb constant. 
B)  the sizes of the two objects. 
C)  the charge of the smaller object. 
D)  the distance between the two objects. 
E)  the charge of the larger object.

Question 7

If you were lost in unfamiliar territory, how could you make a compass for navigation?

Accepted Answer

You would have to find a piece of lodest

Question 8

Which of the following is an example of using the Earth's magnetic field for navigation?

Accepted Answer

A)  Sailors of the past used compasses to direct their course. 
B)  Some bacteria navigate up and down within pond ooze. 
C)  Some migratory birds are directed by the magnetic field. 
D)  The Australian silvereye can see the magnetic fields using a form of color vision. 
E)  All of the choices are ways in which the magnetic field is or was used for navigation. 
A)  Sailors of the past used compasses to direct their course. 
B)  Some bacteria navigate up and down within pond ooze. 
C)  Some migratory birds are directed by the magnetic field. 
D)  The Australian silvereye can see the magnetic fields using a form of color vision. 
E)  All of the choices are ways in which the magnetic field is or was used for navigation.

Question 9

Mary Shelley's Frankenstein was inspired by some experiments and demonstrations in electricity based upon

Accepted Answer

A)  Galvani's research. 
B)  Voltaire's research. 
C)  the writings of Alessandro Volta. 
D)  Benjamin Franklin's research. 
E)  William Gilbert's compass. 
A)  Galvani's research. 
B)  Voltaire's research. 
C)  the writings of Alessandro Volta. 
D)  Benjamin Franklin's research. 
E)  William Gilbert's compass.

Question 10

In the United States, how much electrical current will flow through a 250-watt stereo system to play a compact disk?

Accepted Answer

A)  0.46 amps 
B)  1.04 amps 
C)  2.17 amps 
D)  20.8 amps 
E)  83.33 amps 
A)  0.46 amps 
B)  1.04 amps 
C)  2.17 amps 
D)  20.8 amps 
E)  83.33 amps

Question 11

How is increasing the amperage (number of amps) in a circuit like turning up the flow of water at a faucet?

Accepted Answer

The amp is a measure of the amount of cu

Question 12

How much power is consumed per hour by an electric stove drawing 40 amps? (Note - This electric stove is plugged into a 230 volt wall socket.)

Accepted Answer

A)  5.75 watts/hour 
B)  345 watts/hour 
C)  9.2 kilowatts/hour 
D)  5.75 kilowatts/hour 
E)  9200 kilowatts/hour 
A)  5.75 watts/hour 
B)  345 watts/hour 
C)  9.2 kilowatts/hour 
D)  5.75 kilowatts/hour 
E)  9200 kilowatts/hour

Question 13

Ohm's Law states

Accepted Answer

A)  electrical pressure = flow charge/flow resistance. 
B)  current = voltage (volts) + flow charge (coulombs). 
C)  power (watts) = current (amps) x voltage (volts). 
D)  voltage (volts) = current (amps) x resistance (ohms). 
E)  voltage (volts) = electrical pressure x resistance (ohms). 
A)  electrical pressure = flow charge/flow resistance. 
B)  current = voltage (volts) + flow charge (coulombs). 
C)  power (watts) = current (amps) x voltage (volts). 
D)  voltage (volts) = current (amps) x resistance (ohms). 
E)  voltage (volts) = electrical pressure x resistance (ohms).

Question 14

How did Galvani's experiments challenge the eighteenth century doctrine of vitalism?

Accepted Answer

Galvani showed that electricity, which w

Question 15

One amp of electrical current is equal to

Accepted Answer

A)  one newton per second 
B)  one coulomb of charge per second 
C)  one thousand watts per hour 
D)  one volt times one amp 
E)  one amp divided by one volt per second 
A)  one newton per second 
B)  one coulomb of charge per second 
C)  one thousand watts per hour 
D)  one volt times one amp 
E)  one amp divided by one volt per second

Question 16

Compare the flow path of electrical charges through a nerve cell with the electrical flow path of lightning.

Accepted Answer

Electrons in motion follow a path in bot

Question 17

When you cut a magnet in half you get

Accepted Answer

A)  two monopole magnets. 
B)  two magnets with only north poles. 
C)  two dipole magnets. 
D)  one magnetic dipole. 
E)  one isolated south pole and one isolated north pole. 
A)  two monopole magnets. 
B)  two magnets with only north poles. 
C)  two dipole magnets. 
D)  one magnetic dipole. 
E)  one isolated south pole and one isolated north pole.

Question 18

If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device?

Accepted Answer

Because power in watts is equa

Question 19

How did Michael Faraday get his start as a scientist?

Accepted Answer

He attended the lectures of Sir Humphry

Question 20

Which scientist was most influential in Coulomb's work?

Accepted Answer

A)  Benjamin Franklin 
B)  James Clerk Maxwell 
C)  Isaac Newton 
D)  Thomas Edison 
E)  Michael Faraday 
A)  Benjamin Franklin 
B)  James Clerk Maxwell 
C)  Isaac Newton 
D)  Thomas Edison 
E)  Michael Faraday

Exam 5: Electricity and Magnetism: What Is Lightning

Can a magnetic monopole ever be created from ordinary magnets? Why or why not?

Which is not true based on Maxwell's equations?

How does a nerve in a living organism carry an electrical signal?

Electric fields and electric currents can be produced by

Compare alternating current with direct current. Give examples of each type of current.

Coulomb's law states that force is dependent on all the following except

If you were lost in unfamiliar territory, how could you make a compass for navigation?

Which of the following is an example of using the Earth's magnetic field for navigation?

Mary Shelley's Frankenstein was inspired by some experiments and demonstrations in electricity based upon

In the United States, how much electrical current will flow through a 250-watt stereo system to play a compact disk?

How is increasing the amperage (number of amps) in a circuit like turning up the flow of water at a faucet?

How much power is consumed per hour by an electric stove drawing 40 amps? (Note - This electric stove is plugged into a 230 volt wall socket.)

Ohm's Law states

How did Galvani's experiments challenge the eighteenth century doctrine of vitalism?

One amp of electrical current is equal to

Compare the flow path of electrical charges through a nerve cell with the electrical flow path of lightning.

When you cut a magnet in half you get

If the current (in amps) remains the same, but the voltage increases, what effect does this have on the power (in watts) consumed by some device?

How did Michael Faraday get his start as a scientist?

Which scientist was most influential in Coulomb's work?

Science: a Way of Knowing: How Do You Know What You Know

The Ordered Universe: Why Do Planets Appear to Wander Slowly Across the Sky

Energy: Why Must Animals Eat to Stay Alive

Heat and the Second Law of Thermodynamics: Why Is It Easier to Make an Omelet From an Egg Than to Make an Egg From an Omelet

Waves and Electromagnetic Radiation: What Is Color

Albert Einstein and the Theory of Relativity: Can a Human Ever Travel Faster Than the Speed of Light, at Warp Speed

The Atom: Why Are There so Many Different Materials in the World

Quantum Mechanics: How Can the Electron Behave Like Both a Particle and a Wave

Atoms in Combination: the Chemical Bond: How Does Blood Clot

Materials and Their Properties: How Have Computers Gotten so Much Faster

The Nucleus of the Atom: How Do Scientists Determine the Age of the Oldest Human Fossils

The Ultimate Structure of Matter: How Can Antimatter Be Used to Probe the Human Brain

The Stars: How Much Longer Can the Sun Sustain Life on Earth

Cosmology: Will the Universe End

Earth and Other Planets: Is Earth the Only Planet With Life

Plate Tectonics: Can We Predict Destructive Earthquakes

Earths Many Cycles: Will We Ever Run Out of Fresh Water

Ecology, Ecosystems, and the Environment: Are Human Activities Affecting the Global Environment

Strategies of Life: What Is Life

The Living Cell: What Is the Smallest Living Thing

Molecules of Life: What Constitutes a Healthy Diet

Classical and Modern Genetics: Why Do Offspring Resemble Their Parents

The New Science of Life: Can We Cure Cancer

Evolution: How Did Life Emerge on the Ancient Earth

Filters