Test Bank for College Physics 11th Edition
(Volume 2) By Raymond Serway Chris Vuille
(Chapter 15-30, 100% original verified, A+
Grade)
A potential difference can be created by - answer- Separating positive and negative
charges
What is true about the work, W, done on a book, and the change in gravitational
potential energy, ΔU, of a book when you lift it at a constant speed? - answer- W=ΔU>0
Another term for the electrical potential difference between 2 points (like a battery) is -
answer- Voltage
The unit of electric potential is the volt. What is 1V equal to? - answer- 1 J/C
What is the typical potential difference and polarity across a cell membrane? - answer-
70 mV; inside more negative than outside
The potential energy of a charged particle in an electric field is proportional to - answer-
Its charge
A charged object moves freely in an electric field. As its electric potential energy
decreases what can be said about its kinetic energy? - answer- The kinetic energy
increases
The electron volt is - answer- A unit of energy
The electric potential energy of a charge q in terms of the electric potential, V, of the
space around it is - answer- qV
The electric potential, V, of a point charge is related to the distance, r, from that charge
as - answer- V ∝ 1/r
How are the direction of electric field lines related to equipotential lines? - answer- They
are perpendicular
The electric potential in a charged parallel plate capacitor - answer- Decreases from the
positive plate to the negative plate
, Electric fields - answer- Are perpendicular to equipotential lines
The electric potential energy of 2 charged objects with the same sign charge - answer-
Increases as they are moved closer together
Each pair of leads used to make an electrocardiogram measure - answer- The potential
difference between the leads
The electric potential inside a charged conductor in electrostatic equilibrium - answer- Is
zero
What is the potential difference between a plate of a parallel plate capacitor and a point
half way between the plates if the full potential difference between the plates is 5 V? -
answer- 2.5 V
What is the electric potential energy of 2 charge objects q1 and q2, when they are
separated by a distance r? - answer- U = K (q1*q2)/r
Which plate in a charged capacitor has the higher electric potential? - answer- The
positively charged plate
If you know the charge, Q, on a capacitor and the capacitance, C, what is the potential
difference, ΔV? - answer- ΔV = Q/C
The energy stored in a capacitor - answer- Is proportional to the potential difference
squared
Where is the energy stored in a capacitor? - answer- In the electric field
What is the source of the energy that made the foil ball bounce between the plates of
the parallel plate capacitor? - answer- Potential energy of the separated charges on the
plates.
The capacitance of a parallel plate capacitor only depends on - answer- The area of the
plates and the distance between the plates
The unit of capacitance, farad, F, is equal to - answer- C/V
Capacitors are useful because - answer- They can charge slowly and release the
energy quickly
The energy stored in a capacitor is equal to - answer- ½ Q ΔVC
The potential difference between plates of a parallel plate capacitor is - answer-
Proportional to the charge on the plates
(Volume 2) By Raymond Serway Chris Vuille
(Chapter 15-30, 100% original verified, A+
Grade)
A potential difference can be created by - answer- Separating positive and negative
charges
What is true about the work, W, done on a book, and the change in gravitational
potential energy, ΔU, of a book when you lift it at a constant speed? - answer- W=ΔU>0
Another term for the electrical potential difference between 2 points (like a battery) is -
answer- Voltage
The unit of electric potential is the volt. What is 1V equal to? - answer- 1 J/C
What is the typical potential difference and polarity across a cell membrane? - answer-
70 mV; inside more negative than outside
The potential energy of a charged particle in an electric field is proportional to - answer-
Its charge
A charged object moves freely in an electric field. As its electric potential energy
decreases what can be said about its kinetic energy? - answer- The kinetic energy
increases
The electron volt is - answer- A unit of energy
The electric potential energy of a charge q in terms of the electric potential, V, of the
space around it is - answer- qV
The electric potential, V, of a point charge is related to the distance, r, from that charge
as - answer- V ∝ 1/r
How are the direction of electric field lines related to equipotential lines? - answer- They
are perpendicular
The electric potential in a charged parallel plate capacitor - answer- Decreases from the
positive plate to the negative plate
, Electric fields - answer- Are perpendicular to equipotential lines
The electric potential energy of 2 charged objects with the same sign charge - answer-
Increases as they are moved closer together
Each pair of leads used to make an electrocardiogram measure - answer- The potential
difference between the leads
The electric potential inside a charged conductor in electrostatic equilibrium - answer- Is
zero
What is the potential difference between a plate of a parallel plate capacitor and a point
half way between the plates if the full potential difference between the plates is 5 V? -
answer- 2.5 V
What is the electric potential energy of 2 charge objects q1 and q2, when they are
separated by a distance r? - answer- U = K (q1*q2)/r
Which plate in a charged capacitor has the higher electric potential? - answer- The
positively charged plate
If you know the charge, Q, on a capacitor and the capacitance, C, what is the potential
difference, ΔV? - answer- ΔV = Q/C
The energy stored in a capacitor - answer- Is proportional to the potential difference
squared
Where is the energy stored in a capacitor? - answer- In the electric field
What is the source of the energy that made the foil ball bounce between the plates of
the parallel plate capacitor? - answer- Potential energy of the separated charges on the
plates.
The capacitance of a parallel plate capacitor only depends on - answer- The area of the
plates and the distance between the plates
The unit of capacitance, farad, F, is equal to - answer- C/V
Capacitors are useful because - answer- They can charge slowly and release the
energy quickly
The energy stored in a capacitor is equal to - answer- ½ Q ΔVC
The potential difference between plates of a parallel plate capacitor is - answer-
Proportional to the charge on the plates
