Question 1

The rate of flow of electric charge is measured in units called ______________.

Accepted Answer

The answer of The rate of flow of electric charge...

Question 2

According to the law of poles,like poles ______________.

Accepted Answer

The answer of According to the law of poles,like poles...

Question 3

The law of poles states that like magnetic poles ______________ and unlike magnetic poles ______________.

Accepted Answer

The answer of The law of poles states that like...

Question 4

A system of 18 electrons and 11 neutrons has a net charge of

Accepted Answer

A)  -28.8 × 10-19 C. 
B)  28.8 × 10-19 C. 
C)  -11.2 × 10-19 C. 
D)  -18.0 × 10-19 C. 
E)  11.2 × 10-19 C. 
A)  -28.8 × 10-19 C. 
B)  28.8 × 10-19 C. 
C)  -11.2 × 10-19 C. 
D)  -18.0 × 10-19 C. 
E)  11.2 × 10-19 C.

Question 5

According to the law of charges,unlike charges ______________.

Accepted Answer

The answer of According to the law of charges,unlike charges...

Question 6

A(n)______________ is an elementary particle with no charge.

Accepted Answer

A)  electron 
B)  neutron 
C)  proton 
D)  atom 
A)  electron 
B)  neutron 
C)  proton 
D)  atom

Question 7

In a(n)______________,electrons do not move freely.

Accepted Answer

The answer of In a(n)______________,electrons do not move freely....

Question 8

A(n)______________ converts mechanical energy into electrical energy.

Accepted Answer

The answer of A(n)______________ converts mechanical energy into electrical energy....

Question 9

A system of 11 protons and 15 neutrons has a net charge of

Accepted Answer

A)  17.6 × 10-19 C. 
B)  -17.6 × 10-19 C. 
C)  41.6 × 10-19 C. 
D)  11.0 × 10-19 C. 
E)  -41.6 × 10-19 C. 
A)  17.6 × 10-19 C. 
B)  -17.6 × 10-19 C. 
C)  41.6 × 10-19 C. 
D)  11.0 × 10-19 C. 
E)  -41.6 × 10-19 C.

Question 10

Magnetism results from

Accepted Answer

A)  the movement of magnetic particles. 
B)  the movement of electric charge. 
C)  Earth's magnetic field. 
D)  the movement of magnetic charge. 
A)  the movement of magnetic particles. 
B)  the movement of electric charge. 
C)  Earth's magnetic field. 
D)  the movement of magnetic charge.

Question 11

Three resistors,10 Ω,20 Ω,and 30 Ω,are wired in series and connected to a 120-V battery.How much current flows in the circuit?

Accepted Answer

The answer of Three resistors,10 Ω,20 Ω,and 30 Ω,are wired...

Question 12

A ferromagnetic material loses this property above the ______________ temperature.

Accepted Answer

The answer of A ferromagnetic material loses this property above...

Question 13

Another name for electric potential difference is ______________.

Accepted Answer

The answer of Another name for electric potential difference is...

Question 14

If a negatively charged object is brought near a suspended,positively charged object,the suspended object will be ______________.

Accepted Answer

The answer of If a negatively charged object is brought...

Question 15

A step-down transformer has more windings on the ______________ coil.

Accepted Answer

The answer of A step-down transformer has more windings on...

Question 16

An insulator has a positive electric charge of 8 × 10 -17 C.How many electrons were added or removed?

Accepted Answer

A)  500 electrons removed 
B)  20 electrons removed 
C)  500 electrons added 
D)  20 electrons added 
A)  500 electrons removed 
B)  20 electrons removed 
C)  500 electrons added 
D)  20 electrons added

Question 17

Consider a wire in a magnetic field,as shown in the following figure,with a current flowing upward through it.What will happen to the wire?

Accepted Answer

A)  The wire will be forced toward the north pole. 
B)  The wire will be forced perpendicular to the plane of the magnetic field, into the page. 
C)  The wire will be forced perpendicular to the plane of the magnetic field, out of the page. 
D)  The current will cease flowing. 
E)  The wire will be forced toward the south pole. 
A)  The wire will be forced toward the north pole. 
B)  The wire will be forced perpendicular to the plane of the magnetic field, into the page. 
C)  The wire will be forced perpendicular to the plane of the magnetic field, out of the page. 
D)  The current will cease flowing. 
E)  The wire will be forced toward the south pole.

Question 18

To prevent a home electric circuit from overheating because of too much current,a(n)______________ is used.

Accepted Answer

circuit br

Question 19

A system of 8 electrons,18 protons,and 4 neutrons has a net charge of

Accepted Answer

A)  16.0 × 10-19 C. 
B)  -16.0 × 10-19 C. 
C)  22.4 × 10-19 C. 
D)  10.0 × 10-19 C. 
E)  -22.4 × 10-19 C. 
A)  16.0 × 10-19 C. 
B)  -16.0 × 10-19 C. 
C)  22.4 × 10-19 C. 
D)  10.0 × 10-19 C. 
E)  -22.4 × 10-19 C.

Question 20

AC voltage may be stepped up or stepped down using a(n)______________.

Accepted Answer

The answer of AC voltage may be stepped up or...

Exam 8: Electricity and Magnetism

The rate of flow of electric charge is measured in units called ______________.

According to the law of poles,like poles ______________.

The law of poles states that like magnetic poles ______________ and unlike magnetic poles ______________.

A system of 18 electrons and 11 neutrons has a net charge of

According to the law of charges,unlike charges ______________.

A(n)______________ is an elementary particle with no charge.

In a(n)______________,electrons do not move freely.

A(n)______________ converts mechanical energy into electrical energy.

A system of 11 protons and 15 neutrons has a net charge of

Magnetism results from

Three resistors,10 Ω,20 Ω,and 30 Ω,are wired in series and connected to a 120-V battery.How much current flows in the circuit?

A ferromagnetic material loses this property above the ______________ temperature.

Another name for electric potential difference is ______________.

If a negatively charged object is brought near a suspended,positively charged object,the suspended object will be ______________.

A step-down transformer has more windings on the ______________ coil.

An insulator has a positive electric charge of 8 × 10 -17 C.How many electrons were added or removed?

Consider a wire in a magnetic field,as shown in the following figure,with a current flowing upward through it.What will happen to the wire?

To prevent a home electric circuit from overheating because of too much current,a(n)______________ is used.

A system of 8 electrons,18 protons,and 4 neutrons has a net charge of

AC voltage may be stepped up or stepped down using a(n)______________.

Measurement

Motion

Force and Motion

Work and Energy

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Chemical Reactions

Organic Chemistry

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural G Eology and P Late Tectonics

Minerals, rocks, and Volcanoes

Surface Processes

Geologic Time

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The law of poles states that like magnetic poles and unlike magnetic poles .