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.

In this teaching unit you will learn: To understand the parallelism between an electric circuit and the distribution of water in a closed circuit. To learn the characteristic magnitudes which describe an electric circuit: the potential difference, intensity, resistance, electromotive and counter electromotive force. To demonstrate and understand the fundamental laws which relate these magnitudes. To be able to calculate intensities, tension, power and energy in simple circuits.