ELECTRICITY

In our daily life we commonly use the term energy in a variety of sense, for example we say, an atheletes body is full of energy, a glass of milk provides the child energy, burning of gas gives energy to cook our meal or burning of fuels gives energy to drive a vehicles etc. In conclusion we can say that energy is such an entity which is needed for doing any work or any object that has capacity to do work is having energy.

There are a number of sources where form energy can be harvested. The basic principle is that different forms of energy can be interconverted. The most ancient sources of energy is Sun and then come wood or coal which upon burning provide energy to cook meals. This sources has replaced by petroleum gas to some extent. Besides, kerosine oil, petrol, diesel, etc. are also conventional sources of energy. The other sources of energy include harvesting of energy of flowing water by mechanical means into electrical energy ,wind mills converted wind energy to electrical energy, conversion of solar energy through solar cells into electrical energy. The process of nuclear fission produces energy in nuclear power plants.