Hi, I'm Vanessa, I work as an electrical engineer
Although electricity is abstract or "invisible" in most of its
manifestations, such as in the human nervous system, it is
possible to "see" it sometimes, like lightning when a strong
storm develops. Primary energies are those obtained directly
from nature: solar, hydraulic, wind, geothermal, biomass, oil,
natural gas or coal.
Secondary energies come from the transformation of primary
energy for direct consumption, or other uses: gasoline,
electricity, diesel. Electricity is a phenomenon intimately
linked to matter and life. Everything we see around us - and
also what we do not see - is integrated fear electrons,
particles that spin back to atomic nuclei.
The movement of electric charges through a conductive medium
is known as electric current and originates in the contact
between two elements between which there is a difference in
potential.
The continuous electric current is that which flows from one
point to another always in the same direction. The current of
a battery is of the continuous type.
The alternating current is that which flows from one point to
another, changing direction periodically. Large-scale
commercial electricity comes from generators that produce
alternating current.
