Question 1

The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin?

Accepted Answer

The answer of The electric potential at the origin of...

Question 2

The voltage between two parallel plates separated by a distance of 3.0 cm is 120 V. The electric field between the plates is

Accepted Answer

The electric field (E) between two parallel plates is given by the formula E = V/d, where V is the voltage and d is the distance between the plates. Here, E = 120 V / 0.03 m = 4000 V/m.

Question 3

Two uniformly distributed rings of charge, one of total charge Q₁ and radius r₁ and the other of total charge Q₂ and radius r₂, have the same center. The potential at the center is

Accepted Answer

The answer of Two uniformly distributed rings of charge, one...

Question 4

A charge Q distributed uniformly along the edge of a ring of radius R. What is the electric potential due to this charge at a distance x = R from the center the ring along its axis?

Accepted Answer

The answer of A charge Q distributed uniformly along the...

Question 5

If the electric field is 12 V/m in the positive x-direction, what is the potential difference between the origin, (0, 0), and the point (3.0 m, 4.0 m)?

Accepted Answer

The answer of If the electric field is 12 V/m...

Question 6

If an electric field of magnitude 25 V/m makes an angle of 30° with a path of length 10 m, then the integral of E∙dl over this path has a value of

Accepted Answer

The integral of E∙dl over this path is given by:∫E∙dl = E * l * cos(theta) = 25 V/m * 10 m * cos(30°) = 216.5 V.

Question 7

FIGURE 23-1 -Fig. 23-1 shows equipotentials surrounding a pair of charges Q_A and Q_B. The value of the potential half-way between the charges is indicated. Which of the statements below applies to the charges?

Accepted Answer

The potential halfway between two charges is zero, indicating they have opposite signs and equal magnitudes.

Question 8

Computer monitors are often referred to as CRT's. CRT stands for

Accepted Answer

CRT stands for Cathode Ray Tube, which is a technology used in traditional computer monitors and televisions.

Question 9

A half-ring (semicircle) of uniformly distributed charge Q has radius r. The potential at its center is

Accepted Answer

The answer of A half-ring (semicircle) of uniformly distributed charge...

Question 10

An 800 V/m electric field is directed along the +x-axis. If the potential at x = 0 m is 2000 V, what is the potential at x = 2 m?

Accepted Answer

The answer of An 800 V/m electric field is directed...

Question 11

Two equal charges Q are separated by a distance d. One of the charges is released and moves away from the other due to the force between them. When the moving charge is a distance 3d from the other charge, what is its kinetic energy?

Accepted Answer

The answer of Two equal charges Q are separated by...

Question 12

One electron-volt corresponds to

Accepted Answer

One electron-volt (eV) is defined as the amount of kinetic energy gained or lost by an electron when it is accelerated through an electric potential difference of one volt. This is equivalent to 1.6 × 10^-19 joules.

Question 13

Electric dipoles always consist of two charges that are

Accepted Answer

An electric dipole consists of two charges that are equal in magnitude but opposite in sign, creating a separation of positive and negative charges.

Question 14

Cathode rays are now known to be

Accepted Answer

Cathode rays are streams of electrons observed in vacuum tubes.

Question 15

At a certain point in space there is a potential of 400 V. What is the potential energy of a +2-μC charge at that point in space?

Accepted Answer

The potential energy of a charge is given by the formula U = qV, where q is the charge and V is the potential. Plugging in the given values, we get:
U = (2 μC)(400 V)
U = 800 μJ = 8 × 10^-4 J = 8 × 10^-14 J (in scientific notation with proper units)
Therefore, the answer is (E).

Question 16

FIGURE 23-2 
-Fig. 23-2 shows two arcs of a circle on which charges +Q and -Q have been spread uniformly. What is the value of the electric potential at the center of the circle?

Accepted Answer

The answer of FIGURE 23-2 
-Fig. 23-2 shows two arcs...

Question 17

At a certain point in space the electric potential is 20 V. A 4.0-μC charge is brought from infinity to that point. What is the electric potential energy of this charge at that point?

Accepted Answer

The electric potential energy of a point charge in an electric field is given by:

U = qV

where q is the charge and V is the electric potential at that point.

In this case, the charge q is 4.0-μC and the electric potential at that point is 20 V.

Substituting the values in the equation:

U = (4.0 × 10^-6 C) × (20 V) = 80 × 10^-6 J = 80 μJ

Therefore, the electric potential energy of the charge at that point is 80 μJ, which is option B.

Question 18

Three electric charges Q_A = q, Q_B = -q, and Q_C = -2q are located at the points A (x = + a, y = 0), B (x = -a, y = 0), and C (x = 0, y = +2a) respectively. What is the value of the electric potential at the origin?

Accepted Answer

The answer of Three electric charges Q_A = q, Q_B...

Question 19

The energy acquired by a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as

Accepted Answer

An electron-volt is the amount of energy gained by an electron when it moves through a potential difference of one volt.

Question 20

FIGURE 23-3 
-Two point charges of magnitude +4.00 μC and +2.00 μC are placed at the opposite corners of a rectangle as shown in Fig. 23-3.
(a) What is the potential at point A due to these charges?
(b) What is the potential at point B due to these charges?
(c) What is the potential difference between points A and B?

Accepted Answer

The answer of FIGURE 23-3 
-Two point charges of magnitude...

Quiz 23: Electric Potential

The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin?

The voltage between two parallel plates separated by a distance of 3.0 cm is 120 V. The electric field between the plates is

Two uniformly distributed rings of charge, one of total charge Q₁ and radius r₁ and the other of total charge Q₂ and radius r₂, have the same center. The potential at the center is

A charge Q distributed uniformly along the edge of a ring of radius R. What is the electric potential due to this charge at a distance x = R from the center the ring along its axis?

If the electric field is 12 V/m in the positive x-direction, what is the potential difference between the origin, (0, 0) , and the point (3.0 m, 4.0 m) ?

If an electric field of magnitude 25 V/m makes an angle of 30° with a path of length 10 m, then the integral of E∙dl over this path has a value of

FIGURE 23-1 -Fig. 23-1 shows equipotentials surrounding a pair of charges Q_A and Q_B. The value of the potential half-way between the charges is indicated. Which of the statements below applies to the charges?

Computer monitors are often referred to as CRT's. CRT stands for

A half-ring (semicircle) of uniformly distributed charge Q has radius r. The potential at its center is

An 800 V/m electric field is directed along the +x-axis. If the potential at x = 0 m is 2000 V, what is the potential at x = 2 m?

Two equal charges Q are separated by a distance d. One of the charges is released and moves away from the other due to the force between them. When the moving charge is a distance 3d from the other charge, what is its kinetic energy?

One electron-volt corresponds to

Electric dipoles always consist of two charges that are

Cathode rays are now known to be

At a certain point in space there is a potential of 400 V. What is the potential energy of a +2-μC charge at that point in space?

FIGURE 23-2 -Fig. 23-2 shows two arcs of a circle on which charges +Q and -Q have been spread uniformly. What is the value of the electric potential at the center of the circle?

At a certain point in space the electric potential is 20 V. A 4.0-μC charge is brought from infinity to that point. What is the electric potential energy of this charge at that point?

Three electric charges Q_A = q, Q_B = -q, and Q_C = -2q are located at the points A (x = + a, y = 0), B (x = -a, y = 0), and C (x = 0, y = +2a) respectively. What is the value of the electric potential at the origin?

The energy acquired by a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as

Quiz 23: Electric Potential

The electric potential at the origin of an xy-coordinate system is 40 V. A -8.0-μC charge is brought from x = +∞ to that point. What is the electric potential energy of this charge at the origin?

The voltage between two parallel plates separated by a distance of 3.0 cm is 120 V. The electric field between the plates is

Two uniformly distributed rings of charge, one of total charge Q1 and radius r1 and the other of total charge Q2 and radius r2, have the same center. The potential at the center is

A charge Q distributed uniformly along the edge of a ring of radius R. What is the electric potential due to this charge at a distance x = R from the center the ring along its axis?

If the electric field is 12 V/m in the positive x-direction, what is the potential difference between the origin, (0, 0) , and the point (3.0 m, 4.0 m) ?

If an electric field of magnitude 25 V/m makes an angle of 30° with a path of length 10 m, then the integral of E∙dl over this path has a value of

FIGURE 23-1 -Fig. 23-1 shows equipotentials surrounding a pair of charges QA and QB. The value of the potential half-way between the charges is indicated. Which of the statements below applies to the charges?

Computer monitors are often referred to as CRT's. CRT stands for

A half-ring (semicircle) of uniformly distributed charge Q has radius r. The potential at its center is

An 800 V/m electric field is directed along the +x-axis. If the potential at x = 0 m is 2000 V, what is the potential at x = 2 m?

Two equal charges Q are separated by a distance d. One of the charges is released and moves away from the other due to the force between them. When the moving charge is a distance 3d from the other charge, what is its kinetic energy?

One electron-volt corresponds to

Electric dipoles always consist of two charges that are

Cathode rays are now known to be

At a certain point in space there is a potential of 400 V. What is the potential energy of a +2-μC charge at that point in space?

FIGURE 23-2 -Fig. 23-2 shows two arcs of a circle on which charges +Q and -Q have been spread uniformly. What is the value of the electric potential at the center of the circle?

At a certain point in space the electric potential is 20 V. A 4.0-μC charge is brought from infinity to that point. What is the electric potential energy of this charge at that point?

Three electric charges QA = q, QB = -q, and QC = -2q are located at the points A (x = + a, y = 0), B (x = -a, y = 0), and C (x = 0, y = +2a) respectively. What is the value of the electric potential at the origin?

The energy acquired by a particle carrying a charge equal to that on the electron as a result of moving through a potential difference of one volt is referred to as

Two uniformly distributed rings of charge, one of total charge Q₁ and radius r₁ and the other of total charge Q₂ and radius r₂, have the same center. The potential at the center is

FIGURE 23-1 -Fig. 23-1 shows equipotentials surrounding a pair of charges Q_A and Q_B. The value of the potential half-way between the charges is indicated. Which of the statements below applies to the charges?

Three electric charges Q_A = q, Q_B = -q, and Q_C = -2q are located at the points A (x = + a, y = 0), B (x = -a, y = 0), and C (x = 0, y = +2a) respectively. What is the value of the electric potential at the origin?