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Role of Electricity in Modern Society
Electricity is the term of energy and with the development of civilization, necessity and importance of energy increased. Among different forms of energy electricity is one of the basic and fundamental form of energy that has been an invincible part of our modern society. And now at the present time it cannot be kept separate from the list of our basic needs.

There are lots of things to show off the importance in urban areas. But where we are living in rural areas might not visually find much usage of electricity. But there is. Whatever we find around us form toothbrush, toothpaste, shoes, books, food, clothes, furniture, etc., everything is the part of industrialization of which electricity is the first priority. Similarly electricity has lots of importance in our daily life too. In the morning, event to get up we set up an alarm on our mobile phone or portable watch. If it is winter we use heater and in summer, we need fan to cool ourselves, and when the sun is about to set we need to light our home, and the gadgets like mobile phones, watch and laptops, these all need electricity to run. In the absence of electricity they will run out of battery. If we keep our step out of our home, the vehicles uses electricity. If we are in office, we need electricity to use or computer, photocopy machine etc. And we move from village to city areas, when people get up they use electric toothbrush, water heater to take shower, vacuum cleaner to clean their room and washing machines to wash their clothes, and so far form smallest to largest scale industries all need electricity to start and keep running. As a conclusion, in today's modern world, our life becomes inoperable without electricity and since it is the basic thing for other developments like communication, transportation, industrialization, education, health, etc., it is the fundamental infrastructure of development.

Source of electrical energy
Sources of energy can be grouped in two different parts from which electricity can be generated.

Thermal (Heat emitting)                         '''Non-thermal (No Heat)'''

Coal, Nuclear fission,                                                        Solar, tidal

Geothermal (Heat of Earth                                   Wind, Hydropower

Production
Generally electricity is generated by hydropower. In this system, water of river is collected in a dam in order to filter the water and give it potential so that it can be systematically used for generation of electricity. Water collected in dam is then allowed to flow in high speed to the turbines. The kinetic energy of the water makes the turbines rotate. Then the mechanical energy is converted into electrical by generators connected to the turbines. And the generated electrical power is collected in national grid. National grid is the storehouse of country's hydropower energy.

Transmission
The hydropower energy stored in the National Grid is then transmitted by the high tension line. High tension line carries very high voltage of electrical energy. The three lines of high tension transmission are called Blue line, Yellow line and Red line. Electricity cannot be used directly from high tension line for general purpose since this contains very high voltage of current.

Distribution
Since electricity cannot be distributed high tension line for normal purposes. Step-down transformers are used in distribution areas to distribute the electricity for normal use. Step-down transformer converts high voltage current to lower potential thus used to convert high tension transmission to low voltage phase and neutral line and finally distributed for home and office use.