Heart The polarization waves of the heart produce an electric field around our body. This can be measure in an ECG.

Batteries; Kirchhoff’s rules pending

Current; Ohm’s law Ohm's law is the linear relation between the potential and the current.

Capacitors The capacitance of two conductors to store energy only depends on their geometry. Adding a dielectric increases the capacitance.

Energy density Another way to find electrostatic potential energy.

Gradient field; Faraday cage The gradient relates the electric potential with the electric field.

Potential The work per unit charge required to go from infinity to point P.

Gauss’ law Gauss' law relates the electric field through a closed surface with the charge contained within that surface.

Electric field The electric field is defined as the force per unit charge in space.

Coulomb’s law The electric force between two particles decreases with the inverse square of the distance, just as the gravitational force.