Hi. Can someone please explain to me what exactly the electric potential is and how it differs from electric potentialenergy -- not with equations, but in prose. (Or at least, with both.) I can read the equation, but I don't really understand what electric potential IS. What is its significance?
Thank you!

Explain in everyday English and using formulas, the difference between 'electric potential' and 'electric potentialenergy'. Also explain, in the practical sense, why it matters that there is a difference. In other words, when will I ever see it? Also, explain why sometimes 'electrical' is interchanged with 'electrostatic' fo

Two dust particles each of mass 13 ug (10^-6) are floating on a gentle stream of air. what (equal) positive charge would each dust particle have to carry in order that their electrostatic repulsion should exactly balance their gravitational attraction?
What is the electrostaticpotentialenergy of the two dust particles each

Rutherford observed that an alpha particle (Q1 = 2 x 1.6 x 10^-19 coulomb) having a kinetic energy of 7.68 x 10 ^6 electron volts (7.68 x 10^6 x 1.6 x 10^-19 joule) rebounds backward in a head on collision with a gold nucleus (Q2 = 79 x 1.6 x 10^-19 coulomb).
a. What is the distance of closest approach where the electrostatic p

3. (a) Four point charges are placed at the vertices of a square as shown in the diagram.
The charges are of equal magnitude, Q, the sign of each charge is given in this diagram (attached).
(i) What is the value of V x E at all spatial points in this conﬁguration of charges (note that the charges are stationary)? What is t

See attached file.
The problems are from Physics 7th edition by Cutnell & Johnson.
1. During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 1.90 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential ene

When we model proteins on the computer, we must assign a partial charge to each of the non-ionized atoms. Let's consider the hydrogen bond between a carbonyl oxygen with a partial charge of -0.5 and an amino hydrogen with a partial charge of +0.3. The distance between these atoms is typically about 2A. Calculate the electrost

See attached file for graph.
Four charges are placed at the corners of a square, where q is positive. Initially there is no charge in the center of the square.
1) Find the work, W required to bring the charge Qf from infinity and place it at the center of the square.
2) Find the magnitude of the electric force on th