Electrostatic potential

• Electrostatic potential energy is represented by the symbol U.
• Electric potential, which is different from electrostatic potential energy, is represented by the symbol V.
• To bring charges at a distance from each other, work has to be done due to their repulsion.
• The work done in bringing charges at a distance from each other is known as electrostatic potential energy.
• The electrostatic potential energy can be calculated by integrating the force of the charge on the distance between them.
• The electric force is calculated using Coulomb's law, which is repelling, hence the force and dr are in the same direction, making the cosine of theta one, and the integral can be evaluated as minus one over r between R and infinity.
• The electrostatic potential energy is represented by the equation q1q2/4πε0R.
• If q1 and q2 are both positive or both negative, the electrostatic potential energy is positive.
• If one charge is positive and the other is negative, the electrostatic potential energy is negative.
• If the two charges have different polarities, the amount of work that has to be done to bring them together is independent of the path.
• When the electric field is zero, it does not mean that the potential is zero.
• The potential of a charge is determined by the one over R of this little charge and so a negative potential is dominated by surfaces of positive potential and equipotential surfaces of negative potentials.
• The electric field is perpendicular to the equipotential surfaces.
• In Maxwell's calculation, a minus one charge and a plus four charge are present.
• A trash can brought into an external field will become an equipotential when things have calmed down.
• When the potential is zero, there is one surface with zero electric field.
• Electrical engineers always per definition call the potential of the earth zero when they build their circuits.
• When the potential is positive, the equipotential surfaces are spheres.
• When the potential is negative, the equipotential surfaces are spheres.
• The electric field inside the metal will be zero everywhere if there are no electric currents inside.
• When the electric field is zero, it means that there is no force on a positive charge coming from the Lobby seven.
• The change in kinetic energy is dictated only by the difference in potentials, so it doesn't matter where you think of your zero.
• The electric field is not the same as the potential.
• The speed of the electron when it reaches point A is about two percent of the speed of light.
• There are surfaces which have zero potential.
• Maxwell calculated the equipotential surfaces for us.
• A dented metal is an equipotential as long as there are no electric currents inside.
• The electric field is not zero when the potential is zero.
• An electron released at point B in a metal soda will start to move towards point A.
• The kinetic energy of the electron is the charge of the electron times the potential difference between the two objects.
• Potentials are defined relative to infinity, meaning at infinity they are zero.
• A metal that has no electric currents inside will always be an equipotential.
• An equipotential is a metal where there are no electric currents, and charges inside the metal always move to kill the electric field.
• Charges inside the conductor always move to kill the electric field.
• The amount of work done to assemble a collection of charges is the same regardless of the path taken.
• The work done per unit charge coming from infinity would be negative if the charge is negative.
• Electric potential is the work per unit charge to go from infinity to a specific location.
• Electro-static potential can be negative.
• Conservative force is the amount of work done to assemble a collection of charges.
• The potential when infinitely far away, when this R becomes infinitely large, is zero.