Presentations | English
Electricity is the greatest gift of science to mankind. We have reached a point of our civilization when electricity is used for all purposes. Without it, our existence will be impossible. Electricity is a source of energy, produced by a battery or a coil of wires or by dynamo machine. It is produced in thermal station and also in hydro-project. There are various wonders of electricity. The most important of all is electric fan and electric light. These two things have improved our living standard and also efficiency of work. Our houses, roads and shops are lighted. It is difficult and sometimes impossible to work in an office where there is no light and fan. Electricity is essential to operate fan in summer and electric heater in winter. In cold winter, electric heaters warm our rooms. Electricity is a means of communication. Telegraph and telegram device is based on electricity. It is easy send messages to distant places. Telephone also functions due to electricity. Due to this facility, the world has become a familiar place for all. Fax-machine is the latest development. Thus, communication is possible due to electricity. Elect has enabled us to conquer time and space.
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PPTX (76 Slides)
Presentations | English