How electric current is generated?
Answers
Explanation:
Alternating current is produced by electric generators that operate on Faraday's Law of Induction, by which a changing magnetic field can induce an electric current in a conductor. Generators have rotating coils of wire that pass through magnetic fields as they turn.
Explanation:
Atoms are the basic building blocks of matter. Every object in the universe is made up of atoms. Atoms are the tiny particles. Their size is in nanometers.
Each atom consists of subatomic particles such as electrons, protons, and neutrons. These subatomic particles are smaller than the atom.
Atoms are the basic building blocks of matter. Every object in the universe is made up of atoms. Atoms are tiny particles. Their size is in nanometers.
Electrons are the negatively charged particles, protons are the positively charged particles, and neutrons are the neutral particles (no charge).
Protons and neutrons are much heavier than electrons. So the protons and neutrons always reside at the center of the atom. The strong nuclear force between the protons and neutrons make them always stick together.
Protons have positive charge and neutrons have no charge. So the overall charge of the nucleus is positive.
Electrons always revolve around the nucleus because of the electrostatic force of attraction between them.
The electrons revolve around the nucleus in different orbits. Each orbit has an energy level associated with it.
The electrons revolving at a close distance from the nucleus have very low energy. On the other hand, the electrons revolving at a greater distance from the nucleus have very high energy.
The electrons present in the outermost orbit of an atom are called valence electrons.
The electrons in the outermost orbit of an atom are called valence electrons. These electrons are very loosely attached to the parent atom. So applying a small amount of energy is enough to make them free from the parent atom.
When a small amount of energy in the form of heat, light, or electric field is supplied to the valence electrons, they gain sufficient energy and then separated from the parent atom.
The electrons that are separated from the parent atom are known as free electrons. These electrons move freely from one place to another place.
The electrons that are separated from the parent atom are known as free electrons.
We know that electrons have a negative charge. So the free electrons carry negative charge from one place to another place.
We know that electric current means a flow of charge. So the electrons moving freely from one place to another place will conduct electric current.
In semiconductors, both free electrons and holes are present. Free electrons are the negatively charged particles
In semiconductors, both free electrons and holes are present. Free electrons are the negatively charged particles. So they carry a negative charge (electric current). Holes are the positively charged particles. So they carry a positive charge (electric current).
Thus, both free electrons and holes conduct electric current in semiconductors.
In conductors, holes are negligible. So the free electrons conduct electric current.
In conductors, holes are negligible. So the electric current in conductors is conducted by the free electrons.
Protons also have the ability to conduct electric current. However, protons cannot move freely from one place to another place like electrons. They always held in a fixed position. So the protons do not conduct electric current
Mark me as brainlist