The electric force between two particles decreases with the inverse square of the distance, just as the gravitational force.
The electric field is defined as the force per unit charge in space.
Gauss' law relates the electric field through a closed surface with the charge contained within that surface.
The work per unit charge required to go from infinity to point P.
The gradient relates the electric potential with the electric field.
Another way to find electrostatic potential energy.
The capacitance of two conductors to store energy only depends on their geometry. Adding a dielectric increases the capacitance.
Ohm's law is the linear relation between the potential and the current.
My notes of lectures 8 and 12 "Batteries and Kirchhoff's rules" by Walter Lewin. Part of course 8.02 titled "Electricity and Magnetism."
The polarization waves of the heart produce an electric field around our body. This can be measure in an ECG.