Electric Fields and Potential Energy

If the electric field is directed downward, how does the electric potential at point B relate to the electric potential at point A?

What happens to the potential energy of a charge-field system when a positive test charge moves in the direction of the electric field?

A system consists of a positive charge and an electric field. When does the system lose electric potential energy?

As a charged particle moves in an electric field, what form of energy does it gain, which is equal to the loss of potential energy of the charge-field system?

A system consists of a negative charge and an electric field. When does the system gain potential energy?

For a negative charge to move in the direction of the electric field, what must occur?

When a test charge is placed in an electric field, it experiences a force. What is the nature of this force?

If a test charge is moved in an electric field by an external agent, how does the work done by the field relate to the work done by the external agent?

What does the infinitesimal displacement vector, $d\vec{s}$, represent in the context of electric potential energy?

The work done by the electric field is expressed as $\vec{F} \cdot d\vec{s} = q_0 \vec{E} \cdot d\vec{s}$. What does this expression calculate?

The change in potential energy within an electric field is given by $\Delta U = -q_0 \int_A^B \vec{E} \cdot d\vec{s}$. What does this equation calculate?

Why is the line integral used to calculate the work done by a conservative force independent of the path taken by the charge?

The electric potential is defined as the potential energy per unit charge. Which statement accurately describes the nature of electric potential?

Which of the following is NOT true about electric potential?

How will a charged particle behave when it moves in an electric field?

What is the important quantity associated with electric potential?

In practical applications involving electric potential, what is often assumed about the value of the potential at a convenient point in the field?

What characteristic defines electric potential in relation to charges that may be placed in the field?

If a charge moves in an electric field without any change in its kinetic energy, what equation expresses the work performed on the charge?

What is the definition of a volt (V) in terms of other SI units?

What amount of work is required to move a 1-coulomb charge through a potential difference of 1 volt?

In atomic and nuclear physics, what unit of energy is commonly used in addition to the joule?

How is one electron-volt defined?

What is the energy equivalent of 1 eV in joules?

If a positive charge is released from rest in a uniform electric field, in which direction does it move?

When a positive charge moves in the direction of the electric field, what is the sign of the change in potential?

How are the force and acceleration related to the direction of the electric field for a positive charge placed within it?

What principle can be used to determine the speed of a charged particle in a uniform electric field?

If the electric field is uniform, how can the equations for electric potential be simplified?

The equation for the potential difference in a uniform field is given by $V_B - V_A = \Delta V = - \int_A^B \vec{E} \cdot d\vec{s} = -E \int_A^B ds = -Ed$. What does the negative sign in this equation indicate?

What is the relationship between electric field lines and electric potential?

What type of field is produced around a positive point charge?

Given two points A and B in the vicinity of a point charge, the potential difference between them is expressed as $V_B - V_A = k_e q [\frac{1}{r_B} - \frac{1}{r_A}]$. What does this formula imply about the electric potential?

In the context of electric potential due to a point charge, what is the customary reference point for zero potential?

The electric potential at some point r due to a point charge is given by $V = k_e \frac{q}{r}$. What does this equation imply about the potential's dependence on distance?

How is the electric potential due to several point charges determined?

In calculating the electric potential due to multiple charges, what principle is applied?

In the context of electric potential with multiple charges, what type of sum is used to calculate the total potential?

What is the electric potential at $r = \infty$?

For a system of two charged particles, if both charges are of the same sign, what can be said about the potential energy U of the system?

Under what circumstance is the potential energy U negative?

The potential energy of a system with three charges is given by $U = k_e (\frac{q_1q_2}{r_{12}} + \frac{q_1q_3}{r_{13}} + \frac{q_2q_3}{r_{23}})$. What does the result from this equation being independent of?

Consider three charges, $q_1 = 1,\mu C$, $q_2 = -2,\mu C$, and $q_3 = 3,\mu C$, positioned at the vertices of an equilateral triangle with sides of length $r = 0.1,m$. What is the potential energy of this configuration, and without performing calculations, deduce how its sign will affect the work needed to disassemble the system?