Question 1

Electrical resistance is a property of conductors that is measured in units of

Accepted Answer

A) coulomb. 
B) volt. 
C) amp. 
D) ohm. 
A) coulomb. 
B) volt. 
C) amp. 
D) ohm. D

Question 2

Which of the following unit is actually a measure of a rate?

Accepted Answer

A) volt 
B) coulomb 
C) amp 
D) ohm 
A) volt 
B) coulomb 
C) amp 
D) ohm C

Question 3

An object becomes positively charged by gaining protons.

Accepted Answer

A) True 
 B)False  False

Question 4

A magnetic field

Accepted Answer

A) is produced by an excess of stationary electric charges. 
B) is produced by a deficiency of stationary electric charges. 
C) is produced by moving charges. 
D) attracts or repels stationary electric charges. 
A) is produced by an excess of stationary electric charges. 
B) is produced by a deficiency of stationary electric charges. 
C) is produced by moving charges. 
D) attracts or repels stationary electric charges.

Question 5

If you multiply amp * ohm, the answers will be in units of

Accepted Answer

A) power. 
B) potential. 
C) current. 
D) resistance. 
A) power. 
B) potential. 
C) current. 
D) resistance.

Question 6

The electrical force is much weaker than the force of gravity.

Accepted Answer

A) True 
 B)False

Question 7

The rate of flow of electric charge is measured in

Accepted Answer

A) coulombs. 
B) watts. 
C) joules. 
D) amperes. 
A) coulombs. 
B) watts. 
C) joules. 
D) amperes.

Question 8

The resistance of a wire depends on

Accepted Answer

A) the length of the wire. 
B) the cross-sectional area of the wire. 
C) the temperature of the wire. 
D) All of the above. 
A) the length of the wire. 
B) the cross-sectional area of the wire. 
C) the temperature of the wire. 
D) All of the above.

Question 9

Ohm's law states

Accepted Answer

A) a relationship between voltage, current, and charge. 
B) that less current flows when a higher voltage is applied. 
C) that for constant voltage, a greater resistance means more current will flow. 
D) that the current in a circuit increases if the potential difference increases. 
A) a relationship between voltage, current, and charge. 
B) that less current flows when a higher voltage is applied. 
C) that for constant voltage, a greater resistance means more current will flow. 
D) that the current in a circuit increases if the potential difference increases.

Question 10

The unit of electric potential difference between two points is

Accepted Answer

A) an ampere. 
B) a coulomb. 
C) a joule. 
D) a volt. 
A) an ampere. 
B) a coulomb. 
C) a joule. 
D) a volt.

Question 11

Charge moving through a wire produces a magnetic field around the wire.

Accepted Answer

A) True 
 B)False

Question 12

A neutral atom that gains one or more electrons is called a (an)

Accepted Answer

A) negative ion. 
B) positive ion. 
C) de-ionized atom. 
D) positron. 
A) negative ion. 
B) positive ion. 
C) de-ionized atom. 
D) positron.

Question 13

Electric power is measured in units of

Accepted Answer

A) volts. 
B) amps. 
C) ohms. 
D) watts. 
A) volts. 
B) amps. 
C) ohms. 
D) watts.

Question 14

An electric field

Accepted Answer

A) has strength, but not direction. 
B) is present only around stationary electric charges. 
C) is always present around an electron. 
D) cannot exist unless a magnetic field is also present. 
A) has strength, but not direction. 
B) is present only around stationary electric charges. 
C) is always present around an electron. 
D) cannot exist unless a magnetic field is also present.

Question 15

Electrons move from the power plant to homes in an alternating current.

Accepted Answer

A) True 
 B)False

Question 16

The attractive force between two unlike charges has the same strength as the repulsive force between two like charges.

Accepted Answer

A) True 
 B)False

Question 17

If you were to mechanically rotate the armature in an electric motor

Accepted Answer

A) the motor would burn out. 
B) the motor would behave like a generator. 
C) the motor would become magnetized. 
D) nothing would happen. 
A) the motor would burn out. 
B) the motor would behave like a generator. 
C) the motor would become magnetized. 
D) nothing would happen.

Question 18

An electric current is a (an)

Accepted Answer

A) movement of electrons at near the speed of light. 
B) flow of charge. 
C) electrical equivalent of gravitational potential difference. 
D) measured in joules per coulomb. 
A) movement of electrons at near the speed of light. 
B) flow of charge. 
C) electrical equivalent of gravitational potential difference. 
D) measured in joules per coulomb.

Question 19

Electric field lines are drawn

Accepted Answer

A) toward the positive test charge. 
B) away from the positive test charge. 
C) in such a way as to show the direction of the field. 
D) radiating outward like spokes on a wheel. 
A) toward the positive test charge. 
B) away from the positive test charge. 
C) in such a way as to show the direction of the field. 
D) radiating outward like spokes on a wheel.

Question 20

Thomas Edison argued that our electrical system should use direct current because he felt that alternating current was dangerous.

Accepted Answer

A) True 
 B)False

Exam 6: Electricity

Electrical resistance is a property of conductors that is measured in units of

Which of the following unit is actually a measure of a rate?

An object becomes positively charged by gaining protons.

A magnetic field

If you multiply amp * ohm, the answers will be in units of

The electrical force is much weaker than the force of gravity.

The rate of flow of electric charge is measured in

The resistance of a wire depends on

Ohm's law states

The unit of electric potential difference between two points is

Charge moving through a wire produces a magnetic field around the wire.

A neutral atom that gains one or more electrons is called a (an)

Electric power is measured in units of

An electric field

Electrons move from the power plant to homes in an alternating current.

The attractive force between two unlike charges has the same strength as the repulsive force between two like charges.

If you were to mechanically rotate the armature in an electric motor

An electric current is a (an)

Electric field lines are drawn

Thomas Edison argued that our electrical system should use direct current because he felt that alternating current was dangerous.

What Is Science

Motion

Energy

Heat and Temperature

Wave Motions and Sound

Light

Atoms and Periodic Properties

Chemical Bonds

Chemical Reactions

Water and Solutions

Organic Chemistry

Nuclear Reactions

The Universe

The Solar System

Earth in Space

Rocks and Minerals

Plate Tectonics

Building Earths Surface

Shaping Earths Surface

Geologic Time

The Atmosphere of Earth

Weather and Climate

Earths Waters

Filters