Question 1

A current of 6.0 A flows through a resistance of 50 $\Omega$. How much power is dissipated?

Accepted Answer

The answer of A current of 6.0 A flows through...

Question 2

A 20-$\Omega$ resistor and a 30-$\Omega$ resistor are wired in parallel and connected to a 9.0-V battery.a. How much current is drawn from the battery?
b. How much power is dissipated in the circuit?

Accepted Answer

The answer of A 20-$\Omega$ resistor and a 30-$\Omega$ resistor...

Question 3

If two protons are moved 3 times farther apart, the electrical force between them is what factor of the original force?

Accepted Answer

The answer of If two protons are moved 3 times...

Question 4

If the voltage across a resistor is doubled, the current will

Accepted Answer

A)  remain the same. 
B)  be cut to one-fourth. 
C)  be cut in half. 
D)  be doubled. 
E)  be quadrupled. 
A)  remain the same. 
B)  be cut to one-fourth. 
C)  be cut in half. 
D)  be doubled. 
E)  be quadrupled.

Question 5

Two oppositely charged particles ______________ one another.

Accepted Answer

The answer of Two oppositely charged particles ______________ one another....

Question 6

Earth's magnetic field

Accepted Answer

A)  results from a huge bar magnet within the planet. 
B)  is believed to arise from currents within the planet's core. 
C)  is always parallel to the planet's surface. 
D)  is always in the same direction. 
A)  results from a huge bar magnet within the planet. 
B)  is believed to arise from currents within the planet's core. 
C)  is always parallel to the planet's surface. 
D)  is always in the same direction.

Question 7

An object that is positively charged will

Accepted Answer

A)  attract a rubber rod stroked with fur. 
B)  attract a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these 
A)  attract a rubber rod stroked with fur. 
B)  attract a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these

Question 8

A motor converts

Accepted Answer

A)  electricity into magnetism. 
B)  electrical energy into mechanical energy. 
C)  mechanical energy into electrical energy. 
D)  force into power. 
A)  electricity into magnetism. 
B)  electrical energy into mechanical energy. 
C)  mechanical energy into electrical energy. 
D)  force into power.

Question 9

An object may be electrically neutral, but regions may be charged by _____________.

Accepted Answer

The answer of An object may be electrically neutral, but...

Question 10

The resistances are added in a(n) ______________ circuit.

Accepted Answer

The answer of The resistances are added in a(n) ______________...

Question 11

Another name for electric potential difference is ______________.

Accepted Answer

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

Question 12

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

Accepted Answer

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

Question 13

According to the law of poles, like poles ______________.

Accepted Answer

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

Question 14

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 15

Which of the following would be the least conductive?

Accepted Answer

A)  Copper 
B)  Salt water 
C)  Glass 
D)  Mercury 
A)  Copper 
B)  Salt water 
C)  Glass 
D)  Mercury

Question 16

The electrical power dissipated by a resistance R is

Accepted Answer

A)  inversely proportional to I. 
B)  directly proportional to I2. 
C)  directly proportional to I. 
D)  none of these. 
A)  inversely proportional to I. 
B)  directly proportional to I2. 
C)  directly proportional to I. 
D)  none of these.

Question 17

An object that is positively charged will

Accepted Answer

A)  repel a rubber rod stroked with fur. 
B)  repel a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these 
A)  repel a rubber rod stroked with fur. 
B)  repel a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these

Question 18

A moving electric charge or a current in a magnetic field may experience a(n) ______________.

Accepted Answer

The answer of A moving electric charge or a current...

Question 19

Voltage has the units of _____________, which is called a volt.

Accepted Answer

joules per

Question 20

An object that is negatively charged will

Accepted Answer

A)  repel a rubber rod stroked with fur. 
B)  repel a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these 
A)  repel a rubber rod stroked with fur. 
B)  repel a glass rod stroked with silk. 
C)  be polarized. 
D)  none of these

A current of 6.0 A flows through a resistance of 50 $\Omega$ . How much power is dissipated?

A 20- $\Omega$ resistor and a 30- $\Omega$ resistor are wired in parallel and connected to a 9.0-V battery.a. How much current is drawn from the battery? b. How much power is dissipated in the circuit?

If two protons are moved 3 times farther apart, the electrical force between them is what factor of the original force?

If the voltage across a resistor is doubled, the current will

Two oppositely charged particles ______________ one another.

Earth's magnetic field

An object that is positively charged will

A motor converts

An object may be electrically neutral, but regions may be charged by _____________.

The resistances are added in a(n) ______________ circuit.

Another name for electric potential difference is ______________.

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

According to the law of poles, like poles ______________.

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?

Which of the following would be the least conductive?

The electrical power dissipated by a resistance R is

An object that is positively charged will

A moving electric charge or a current in a magnetic field may experience a(n) ______________.

Voltage has the units of _____________, which is called a volt.

An object that is negatively charged will

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Nuclear Physics

The Chemical Elements

Chemical Reactions

Organic Chemistry

Place and Time

The Solar System

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The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

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Exam 8: Chemical Bonding

A current of 6.0 A flows through a resistance of 50 Ω\OmegaΩ . How much power is dissipated?

A 20- Ω\OmegaΩ resistor and a 30- Ω\OmegaΩ resistor are wired in parallel and connected to a 9.0-V battery.a. How much current is drawn from the battery? b. How much power is dissipated in the circuit?

If two protons are moved 3 times farther apart, the electrical force between them is what factor of the original force?

If the voltage across a resistor is doubled, the current will

Two oppositely charged particles ______________ one another.

Earth's magnetic field

An object that is positively charged will

A motor converts

An object may be electrically neutral, but regions may be charged by _____________.

The resistances are added in a(n) ______________ circuit.

Another name for electric potential difference is ______________.

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

According to the law of poles, like poles ______________.

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?

Which of the following would be the least conductive?

The electrical power dissipated by a resistance R is

An object that is positively charged will

A moving electric charge or a current in a magnetic field may experience a(n) ______________.

Voltage has the units of _____________, which is called a volt.

An object that is negatively charged will

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Reactions

Organic Chemistry

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

Geologic Time

Filters

A current of 6.0 A flows through a resistance of 50 $\Omega$ . How much power is dissipated?

A 20- $\Omega$ resistor and a 30- $\Omega$ resistor are wired in parallel and connected to a 9.0-V battery.a. How much current is drawn from the battery? b. How much power is dissipated in the circuit?