Coulombpotenciál

Coulombpotenciál, also known as electric potential, is a scalar quantity that describes the amount of electric potential energy per unit charge at a specific point in an electric field. It is derived from Coulomb's law, which governs the force between electric charges. The Coulomb potential at a point due to a point charge is given by the formula V = kq/r, where k is Coulomb's constant, q is the magnitude of the source charge, and r is the distance from the source charge to the point.

The unit of Coulomb potential is the volt (V), which is equivalent to joules per coulomb (J/C). A positive charge creates a positive potential, meaning it would require work to move a positive test charge away from it. Conversely, a negative charge creates a negative potential, meaning it would require work to move a positive test charge towards it.

In a region with multiple charges, the total Coulomb potential at a point is the algebraic sum of the potentials due to each individual charge. This principle of superposition is fundamental in electrostatics. The difference in electric potential between two points is called the electric potential difference or voltage, and it represents the work done per unit charge in moving a charge between those two points. Electric fields are often visualized by lines of constant potential, known as equipotential lines or surfaces.