Electricity
by Iker Rodríguez
1. The meaning of electricity
1.1. Electricity is a set of phenomens produced by the movement and interaction between the positive and negative electric charges of physical bodies.
2. The 4th basic magnitudes (PURI).
2.1. These basic SI units and their physical magnitudes are the meter for length, the kilogram for mass, the second for time, the ampere for electric current, the kelvin for temperature, the candela for light intensity, and the mole for the amount of substance.
3. The physical effects of electricity.
3.1. The physical phenomena it produces can be light (light bulb), heat (electric radiator), movement (motors), etc. The movement of electrons is what is known as "electric current". So we can say that electricity are phenomena that are produced by the passage of electric current.
4. The dangers of electricity and how to protect yourself.
4.1. Avoid touching any appliance that is plugged into the electrical current with wet hands. Under no circumstances let children play with plugs or grasp cables that they see lying in the street. They could be connected to the power line and cause burns.