Question 1

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 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

A)  remain the same. 
B)  be cut to one-quarter. 
C)  be cut by one-quarter. 
D)  be quadrupled. 
E)  be multiplied by sixteen. 
A)  remain the same. 
B)  be cut to one-quarter. 
C)  be cut by one-quarter. 
D)  be quadrupled. 
E)  be multiplied by sixteen.

Question 4

The direction of the magnetic field of a bar magnet is

Accepted Answer

A)  in the direction opposite to that in which a compass would point. 
B)  in any direction. 
C)  away from the south pole. 
D)  away from the north pole. 
A)  in the direction opposite to that in which a compass would point. 
B)  in any direction. 
C)  away from the south pole. 
D)  away from the north pole.

Question 5

Three resistors, 60 $\Omega$, 80 $\Omega$, and 80 $\Omega$, are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

Accepted Answer

A)  220 $\Omega$ 
B)  24 $\Omega$ 
C)  0.042 $\Omega$ 
D)  384000 $\Omega$ 
A)  220 $\Omega$ 
B)  24 $\Omega$ 
C)  0.042 $\Omega$ 
D)  384000 $\Omega$

Question 6

If work is done on an electric charge, a ______________ is present.

Accepted Answer

A)  resistance 
B)  current 
C)  voltage 
D)  transformer 
E)  bigger charge 
A)  resistance 
B)  current 
C)  voltage 
D)  transformer 
E)  bigger charge

Question 7

A component in an automobile 12-V electrical system has a resistance of 20 $\Omega$.a. How much current is in the component when the system is in operation?
b. How much energy is dissipated by the component each second?

Accepted Answer

The answer of A component in an automobile 12-V electrical...

Question 8

A system of an electron and a neutron has a net charge of

Accepted Answer

A)  +1.6 $\times$ 10-19 C. 
B)  -1.6 $\times$ 10-19 C. 
C)  3.2 $\times$ 10-19 C. 
D)  zero. 
A)  +1.6 $\times$ 10-19 C. 
B)  -1.6 $\times$ 10-19 C. 
C)  3.2 $\times$ 10-19 C. 
D)  zero.

Question 9

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

Accepted Answer

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

Question 10

An object that is negatively 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 11

For an ohmic conductor, current is

Accepted Answer

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

Question 12

A system of a proton and a neutron has a net charge of

Accepted Answer

A)  +1.6 $\times$ 10-19 C. 
B)  -1.6 $\times$ 10-19 C. 
C)  3.2 $\times$ 10-19 C. 
D)  zero. 
A)  +1.6 $\times$ 10-19 C. 
B)  -1.6 $\times$ 10-19 C. 
C)  3.2 $\times$ 10-19 C. 
D)  zero.

Question 13

Power may be expressed as _____________ times resistance.

Accepted Answer

The answer of Power may be expressed as _____________ times...

Question 14

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 15

Voltage is defined as the ______________ per unit ______________.

Accepted Answer

A)  charge; current 
B)  work; current 
C)  charge; work 
D)  work; charge 
A)  charge; current 
B)  work; current 
C)  charge; work 
D)  work; charge

Question 16

One ampere $\times$ one second is a unit of

Accepted Answer

A)  power. 
B)  current. 
C)  voltage. 
D)  electric charge. 
E)  resistance. 
A)  power. 
B)  current. 
C)  voltage. 
D)  electric charge. 
E)  resistance.

Question 17

The unit of resistance is called a(n)

Accepted Answer

A)  volt. 
B)  ampere. 
C)  coulomb. 
D)  ohm. 
E)  watt. 
A)  volt. 
B)  ampere. 
C)  coulomb. 
D)  ohm. 
E)  watt.

Question 18

In a battery circuit with different resistors in parallel,

Accepted Answer

A)  the total resistance is larger than the value of the largest resistor. 
B)  the current is the same through each resistor. 
C)  the total resistance is larger than the value of the smallest resistor. 
D)  the voltage is the same across each resistor. 
A)  the total resistance is larger than the value of the largest resistor. 
B)  the current is the same through each resistor. 
C)  the total resistance is larger than the value of the smallest resistor. 
D)  the voltage is the same across each resistor.

Question 19

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 20

A system of 12 electrons and 11 protons has a net charge of

Accepted Answer

A)  -1.6 $\times$ 10-19 C. 
B)  1.6 $\times$ 10-19 C. 
C)  16.0 $\times$ 10-19 C. 
D)  -1.0 $\times$ 10-19 C. 
E)  -16.0 $\times$ 10-19 C. 
A)  -1.6 $\times$ 10-19 C. 
B)  1.6 $\times$ 10-19 C. 
C)  16.0 $\times$ 10-19 C. 
D)  -1.0 $\times$ 10-19 C. 
E)  -16.0 $\times$ 10-19 C.

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

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

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

The direction of the magnetic field of a bar magnet is

Three resistors, 60 $\Omega$ , 80 $\Omega$ , and 80 $\Omega$ , are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

If work is done on an electric charge, a ______________ is present.

A component in an automobile 12-V electrical system has a resistance of 20 $\Omega$ .a. How much current is in the component when the system is in operation? b. How much energy is dissipated by the component each second?

A system of an electron and a neutron has a net charge of

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

An object that is negatively charged will

For an ohmic conductor, current is

A system of a proton and a neutron has a net charge of

Power may be expressed as _____________ times resistance.

The electrical power dissipated in an appliance depends on

Voltage is defined as the per unit .

One ampere $\times$ one second is a unit of

The unit of resistance is called a(n)

In a battery circuit with different resistors in parallel,

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

A system of 12 electrons and 11 protons has a net charge of

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Exam 8: Chemical Bonding

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

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

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

The direction of the magnetic field of a bar magnet is

Three resistors, 60 Ω\OmegaΩ , 80 Ω\OmegaΩ , and 80 Ω\OmegaΩ , are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

If work is done on an electric charge, a ______________ is present.

A component in an automobile 12-V electrical system has a resistance of 20 Ω\OmegaΩ .a. How much current is in the component when the system is in operation? b. How much energy is dissipated by the component each second?

A system of an electron and a neutron has a net charge of

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

An object that is negatively charged will

For an ohmic conductor, current is

A system of a proton and a neutron has a net charge of

Power may be expressed as _____________ times resistance.

The electrical power dissipated in an appliance depends on

Voltage is defined as the ______________ per unit ______________.

One ampere ×\times× one second is a unit of

The unit of resistance is called a(n)

In a battery circuit with different resistors in parallel,

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

A system of 12 electrons and 11 protons has a net charge of

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

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

Three resistors, 60 $\Omega$ , 80 $\Omega$ , and 80 $\Omega$ , are wired in series and connected to a 120-V battery. What is the equivalent resistance for this circuit?

A component in an automobile 12-V electrical system has a resistance of 20 $\Omega$ .a. How much current is in the component when the system is in operation? b. How much energy is dissipated by the component each second?

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

Voltage is defined as the per unit .

One ampere $\times$ one second is a unit of