Question 1

Consider a wire in a magnetic field, as shown in the following figure, with a current flowing downward 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 2

The electrical power dissipated in an appliance depends on

Accepted Answer

A)  voltage. 
B)  current. 
C)  resistance. 
D)  all of these. 
A)  voltage. 
B)  current. 
C)  resistance. 
D)  all of these.

Question 3

A ferromagnetic material loses this property above the ______________ temperature.

Accepted Answer

A)  domain 
B)  Faraday 
C)  Curie 
D)  Coulomb 
A)  domain 
B)  Faraday 
C)  Curie 
D)  Coulomb

Question 4

The unit of electric current is the ______________.

Accepted Answer

The answer of The unit of electric current is the...

Question 5

Three resistors, 90 Ω, 40 Ω, and 60 Ω, are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

Accepted Answer

A)  190 Ω 
B)  19 Ω 
C)  0.053 Ω 
D)  216000 Ω 
A)  190 Ω 
B)  19 Ω 
C)  0.053 Ω 
D)  216000 Ω

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

A)  repelled. 
B)  charged more. 
C)  discharged. 
D)  attracted. 
A)  repelled. 
B)  charged more. 
C)  discharged. 
D)  attracted.

Question 8

Consider a wire at rest in a magnetic field as shown in the following figure. What will happen to the wire?

Accepted Answer

A)  A current will flow in the wire. 
B)  The wire will be pushed perpendicular to the plane of the magnetic field. 
C)  The wire will be pushed toward the north pole. 
D)  Nothing will happen. 
A)  A current will flow in the wire. 
B)  The wire will be pushed perpendicular to the plane of the magnetic field. 
C)  The wire will be pushed toward the north pole. 
D)  Nothing will happen.

Question 9

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

Accepted Answer

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

Question 10

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 11

The voltage for typical home appliances is ______________.

Accepted Answer

The answer of The voltage for typical home appliances is...

Question 12

For an ohmic conductor, current is

Accepted Answer

A)  inversely proportional to voltage. 
B)  inversely proportional to resistance. 
C)  independent of resistance. 
D)  independent of voltage. 
A)  inversely proportional to voltage. 
B)  inversely proportional to resistance. 
C)  independent of resistance. 
D)  independent of voltage.

Question 13

An insulator has a negative electric charge of 2.4 × 10 -17 C. How many electrons were added or removed?

Accepted Answer

A)  150 electrons removed 
B)  67 electrons removed 
C)  150 electrons added 
D)  67 electrons added 
A)  150 electrons removed 
B)  67 electrons removed 
C)  150 electrons added 
D)  67 electrons added

Question 14

In a 12-V battery circuit, a 10-Ω resistor and a 30-Ω resistor are connected in series. How much current does the battery supply to the circuit?

Accepted Answer

The answer of In a 12-V battery circuit, a 10-Ω...

Question 15

A(n) ______________ is an elementary particle with a charge of -1.6 × 10-19 C.

Accepted Answer

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

Question 16

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 17

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 18

A generator is a device that converts

Accepted Answer

A)  heat energy into mechanical energy. 
B)  chemical energy into electrical energy. 
C)  mechanical energy into electrical energy. 
D)  electrical energy into mechanical energy. 
A)  heat energy into mechanical energy. 
B)  chemical energy into electrical energy. 
C)  mechanical energy into electrical energy. 
D)  electrical energy into mechanical energy.

Question 19

The angle between true north and the direction in which a compass needle points is called the angle of

Accepted Answer

A)  attack. 
B)  inclination. 
C)  declination. 
D)  dip. 
A)  attack. 
B)  inclination. 
C)  declination. 
D)  dip.

Question 20

A(n) ______________ is an elementary particle with a charge of +1.6 × 10-19 C.

Accepted Answer

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

Exam 8: Electricity and Magnetism

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

The electrical power dissipated in an appliance depends on

A ferromagnetic material loses this property above the ______________ temperature.

The unit of electric current is the ______________.

Three resistors, 90 Ω, 40 Ω, and 60 Ω, are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

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

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

Consider a wire at rest in a magnetic field as shown in the following figure. What will happen to the wire?

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

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

The voltage for typical home appliances is ______________.

For an ohmic conductor, current is

An insulator has a negative electric charge of 2.4 × 10 -17 C. How many electrons were added or removed?

In a 12-V battery circuit, a 10-Ω resistor and a 30-Ω resistor are connected in series. How much current does the battery supply to the circuit?

A(n) ______________ is an elementary particle with a charge of -1.6 × 10-19 C.

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

Magnetism results from

A generator is a device that converts

The angle between true north and the direction in which a compass needle points is called the angle of

A(n) ______________ is an elementary particle with a charge of +1.6 × 10-19 C.

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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A(n) ______________ is an elementary particle with a charge of -1.6 × 10^-19 C.

A(n) ______________ is an elementary particle with a charge of +1.6 × 10^-19 C.