كهرباء - ميكانيك - اتصالات - IT

Proper definition of electric current?

Actually, before coming to the question that what is electric current, we need to know what is electricity. Now in some easier words, electricity can be defined as the movement of free electrons across any materials. The outer electrons of an atom is loosely attached with the nucleus, so not much energy is required to de touch this loosely bond electrons from the atom. So when the excitation is provided properly, this electrons get detached from the atom. As well as when these electrons collide with other loosely bond electrons, ultimately the no. of free electrons increases in the matter. And finally when this electrons flow from higher potential to lower potential, we can term that flow as electric current, which flows through the conductor. Now measurement of electric current is done on the basis of the charge of electrons because current is nothing but flow of electrons from higher potential to lower potential.

Now, as charge of an electron is = − 1.6021 × 10− 19coulomb. So, the unit of electric current is expressed as coulomb/sec. Because, this term defines the no. of electrons flowing through a cross section of the conductor. Now coulomb/second is termed as Ampere(A). So the SI unit of electric current flow is Ampere(A).

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6.7K viewsApr 15, 2020 at 23:49

Proper definition of electric current?

Actually, before coming to the question that what is electric current, we need to know what is electricity. Now in some easier words, electricity can be defined as the movement of free electrons across any materials. The outer electrons of an atom is loosely attached with the nucleus, so not much energy is required to de touch this loosely bond electrons from the atom. So when the excitation is provided properly, this electrons get detached from the atom. As well as when these electrons collide with other loosely bond electrons, ultimately the no. of free electrons increases in the matter. And finally when this electrons flow from higher potential to lower potential, we can term that flow as electric current, which flows through the conductor. Now measurement of electric current is done on the basis of the charge of electrons because current is nothing but flow of electrons from higher potential to lower potential.

Now, as charge of an electron is = − 1.6021 × 10− 19coulomb. So, the unit of electric current is expressed as coulomb/sec. Because, this term defines the no. of electrons flowing through a cross section of the conductor. Now coulomb/second is termed as Ampere(A). So the SI unit of electric current flow is Ampere(A).

📚المكتبة الهندسية📚
@mc4eng_books

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