In the context of electric potential, another term commonly used for voltage is:

The electric potential at points in an $xy$ plane is given by $V=3.0x{y}^2$ (in volts), where $x$ and $y$ are in meters. What is the magnitude of the electric field at the point $(1,2)$?

Suppose six points labeled A through F are placed in the vicinity of a positive point charge, with their distances from the charge given as follows: A is at $1 m$, B at $2 m$, C at $3 m$, D at $4 m$, E at $5 m$, and F at $6 m$. Rank the locations A to F in order of decreasing electric potential (from highest to lowest).

Given a point charge $q$ located at a distance $r$ from point $a$ in vacuum, what is the electric potential at point $a$ due to this charge?