Current electricity not occur in conductor
Answers
Answer:Current electricity not occur in conductor because it didn't contain free electron.
Explanation:
An electric charge will experience a force if an electric field is applied. If it is
free to move, it will thus move contributing to a current. In nature, free
charged particles do exist like in upper strata of atmosphere called the
ionosphere. However, in atoms and molecules, the negatively charged
electrons and the positively charged nuclei are bound to each other and
are thus not free to move. Bulk matter is made up of many molecules, a
gram of water, for example, contains approximately 1022 molecules. These
molecules are so closely packed that the electrons are no longer attached
to individual nuclei. In some materials, the electrons will still be bound,
i.e., they will not accelerate even if an electric field is applied. In other
materials, notably metals, some of the electrons are practically free to move
within the bulk material. These materials, generally called conductors,
develop electric currents in them when an electric field is applied.
If we consider solid conductors, then of course the atoms are tightly
bound to each other so that the current is carried by the negatively
charged electrons. There are, however, other types of conductors like
electrolytic solutions where positive and negative charges both can move.
In our discussions, we will focus only on solid conductors so that the
current is carried by the negatively charged electrons in the background
of fixed positive ions.