Question 1

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

Accepted Answer

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

Question 2

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.E) All of the above
F) A) and B)

Question 3

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 ΩE) B) and D)
F) A) and D)

Question 4

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.E) All of the above
F) B) and C)

Question 5

The electrical power dissipated in an appliance depends on

Accepted Answer

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

Question 6

A ferromagnetic material loses this property above the ______________ temperature.

Accepted Answer

A)   domain
B)   Faraday
C)   Curie
D)   CoulombE) A) and D)
F) All of the above

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.E) B) and D)
F) A) and B)

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.E) A) and D)
F) All of the above

Question 9

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

Accepted Answer

A)   electron
B)   neutron
C)   proton
D)   atomE) B) and D)
F) A) and B)

Question 10

The voltage for typical home appliances is ______________.

Accepted Answer

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

Question 11

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

Accepted Answer

A)   electron
B)   neutron
C)   proton
D)   atomE) B) and D)
F) A) and D)

Question 12

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.E) B) and C)
F) A) and C)

Question 13

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 14

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 15

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 addedE) B) and C)
F) C) and D)

Question 16

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 17

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 addedE) C) and D)
F) None of the above

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.E) A) and B)
F) A) and C)

Question 19

The unit of electric current is the ______________.

Accepted Answer

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

Question 20

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.F) B) and C)
G) B) and E)

Exam 8: Electricity and Magnetism

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

The unit of electric current is the ______________.

Correct AnswerverifiedShow Answer

For an ohmic conductor, current is

Correct AnswerverifiedShow Answer

A generator is a device that converts

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The electrical power dissipated in an appliance depends on

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A ferromagnetic material loses this property above the ______________ temperature.

Correct AnswerverifiedShow Answer

Magnetism results from

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

The voltage for typical home appliances is ______________.

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

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

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