Any
appliances that we use in our
daily lives such as household
appliances, office equipments
and industrial equipments, almost
all of those things take the electricity.
Therefore, we should understand
the electricity.
The
first question that we will find
out the answer is "where does
electricity come from?"
All
matters are made up of atoms.
Ask the next question, "What
are atoms?"
Atoms are the smallest part
of an element. They are
composed of nucleus and
electrons, the electrons
surround the nucleus. Elements
are identified by the number
of electrons in orbit around
the nucleus of the atoms
and by the number of protons
in the nucleus.
The
nucleus is made up of protons
and neutrons, and the number
of protons and neutrons
are balanced. Neutrons have
no electric charge, protons
have positive charges (+)
and electrons have negative
charges (-). A positive
charge of proton equals
a negative charge of electron.
Electrons are bound in their
orbit by the attraction
of the protons, but electrons
in the outer band can become
free of their orbit by some
external forces. These are
referred to as free electrons,
which move from one atom
to the next, the electron
flows are produced. These
are the basis of electricity.
Materials that allow many
electrons to move freely
are called conductors
and materials that allow
few free electrons to move
are called insulators.
All matters are made up
of atoms that have electric
charges. Therefore, they
have electric charges. For
the matter that have a balanced
the number of protons and
electrons, the positive
charge force and the negative
charge force are balanced.
It is called neutral state
of an atom. (The number
of protons and electrons
remain equal.)
"Static
electricity" represents
a situation that all things
are made up of electric
charges. For example, the
rubbing of material against
another can cause the static
electricity. The free electrons
of one material move forcefully
till they are freed of their
orbits around the nucleus
and move to another. The
electrons of one material
decrease, it presents positive
charges. At the same time,
the electrons of another
increase, it has negative
charges.
In
general, the charge producing
of the matter means the matter
has electric charges. It has positive
and negative charges, which is
expressed in coulomb.
