A CURRENT BEGAN

Before swimming in electronics components world , we need first to know about some basics for what we can understanding electricity .

what about Electric Current

electrons is a very small bodies (have you ever seen an electron moving through the street ) that spins in a very high speed around nucleus , electrons is a negative charged bodies that attached with positive one (the terms negative and positive is is an arbitrary terms two describe the two types of forces )called protons , but we can't forget that nucleus made of two bodies protons and neutrons (according to neutral charged bodies) .

And all previous is the structure of so-called "atom" (Protons And neutrons in nucleus attached with electrons ) , any structure of any material is made of millions of atoms (can you imagine # of atoms in the whole world ).

when this electrons is at rest called a " Charge" , the charge is made of 6.24 followed with 18 zero of electrons (you can note that this charge is measured with coulomb One coulomb is the amount of electric charge transported in one second by a steady current of one ampere () ,It is named after "Charles-Augustin de Coulomb" ) .

If this charge is moved with time this is called An Electrical current "I" (I=dq\dt) , in other hand any continuing flow of charged particles is called current , current can be measured by ampere (It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics. In practice, its name is often shortened to amp ) .

We can note that we are studying electronic brance (electronic components)

in order to control this beam of electrons (current) , for example changing its direction or its frequency and so on .

Now let's start to define "Amp" , if this no. of electrons (charge) is is moved through certain point in one second of time it will create an electrical current of one amp (1 amp = 1Coulomb/1 sec ) .