The educational resource shows a visual that represents a capacitor, a system made up of two conducting plates with equal charges, but with opposite signs, separated by an insulator or a vacuum. Inside it the intensity of the field is approximately uniform, equal at all points.

The following visual explains the precautions that should be taken into account when dealing with electricity

The movement of the electrons along a conductor in the same direction.

Concept of electric battery.

Batteries in series

The electrical resistance of a conductor is a measure of its opposition to the flow of the electric current.