Question

Which equation is used to calculate the electric potential in an electric field from a point charge?

Answer 1

Answer:

The electric potential (voltage) $V$ produced by a point charge $Q$, at any point in space, is given by the following equation:

$V=k\frac{Q}{r}$

Where:

$k=8.99(10)^{9} Nm^{2}/C^{2}$ is the Coulomb's constant

$r$ is the distance  

The result is a scalar quantity, is defined as the electric potential energy per unit of charge and determines the electric influence exerted by the charge on that point of space.