What is electricity | working method, examples in easy words

What is electricity

What is electricity science? This question is simple to answer. Electricity is all around us, providing energy to our cellphone, computers, ironing, and air conditioner. You must read different types of electricity.

What Is Electricity

In fact, electricity is just one form of energy. I explain it,

Atoms are the smallest particle in the world, and everything in the world comprises particles of atoms. And each atom has a center، called a nucleus. The nucleus comprises a positive charge particle and an uncharged particle.

The positively charged particles are protons and the uncharged particles are electrons. The nucleus is surrounded by a negative charge particle called an electron

The negative charge of the electron is equal to the positive charge of the proton. And the number of electrons in an atom is always equal to the number of protons.

When the number of protons and electrons in the atom upset because of external power, then an atom loses or gets electrons. So, this free movement of electrons produces an electric current.

In all of this article, we will give you a complete overview of what is electricity and how it generates.

Electricity generates when electrons pass through a conductor such as copper or aluminum wire.

In fact, the electricity we use is a secondary source that comes from many other primary sources, such as coal, natural gas, oil, and nuclear power.

  • Our body receives chemical energy from food and converts it into mechanical energy when we move.
  • The engine of a car converts the chemical energy of petrol into kinetic energy (moving energy).
  • Heaters convert electric energy into heat energy.

The simplest and easiest way to generate electricity is to use an electric generator. So, we use an electric generator to convert mechanical energy into electric energy.

Electric Generator And Electricity

Electrical machine (electrical machine) is a device that can convert mechanical energy into electrical energy and vice versa, electrical energy into mechanical energy. So, we know an electric engine that produces electrical energy from mechanical energy is a generator. 

Generating electricity in a generator uses a magnetic field. The magnetic field becomes a fundamental mechanism that plays an important role in converting electrical energy.

The existence of a magnetic field somewhere will affect the surrounding environment. A basic principle of the work of a generator is: If there is a conductor material, for example, a wire moves at a certain speed and passes through a magnetic field, then the moving wire will be induced electric voltage because of the existence of a magnetic field. 

The two major components of a generator are rotating components known as rotors and stationary components known as stators. 


So, engineers design the rotor to have a magnetic field by implanting a magnet in the rotor or by giving a DC current to the rotor. Either by using permanent magnets or by giving a DC current, they both produce magnetic fields in the rotor which affect the surrounding environment.


The major part of the stator is a collection of a three-coils conductor material which is usually made of iron or aluminum. 

Engineers separate coils by an angle of 120 degrees. The purpose of the three coils with a relative angle of 120 degrees is to produce three-phase electricity. 

When the rotor rotates, the magnetic field in the rotor also rotates. With the relative motion between the magnetic field and the coils in the stator, it induces the voltage in each coil with the same magnitude but the phase differs by 120 degrees.

If we connect a load to the stator which now has an electric voltage, then the current will flow to the load.

So, we need an integrated system mechanism to produce a rotating rotor. The working principle of the mechanism is to combine the work of the rotor/stator with a continuous rotation system. Or the rotating rotor extends the shaft rotation (shaft) of the mechanism of the continuous rotation system.


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