Electric energy :
The electric energy or commonly called electricity is used to drive a variety of equipments.
Sources of electrical energy :
There are number of ways to convert different forms of energy into electrical energy:
1-) Electro Dynamo: This equipment converts mechanical energy into electrical energy. In this, an enclosed coil is rotated in the magnetic field, as a result due to electro-magnetic induction electricity is generated.
2-) Electric Cell: In this chemical energy is converted into electrical energy. Examples are dry cell, lead battery, Ni-Fe battery etc.
3-) Photo Electric Cell: In this light energy is converted into electric energy. Most common example is use of solar cells that convert solar energy to electricity. Silicon is used in making solar cells. Artificial satellites use solar cells as main sources of energy.
4-) Thermo-Couple: In this apparatus a closed circuit is made by joining the ends of antimony and bismuth rods. Both the joints of this circuit when placed at two different temperatures an electromotive force is produce in the circuit resulting in flow of electric current in the circuit.
1-) SPARKLING VISION OF A TEST TUBE PARTIALLY FILLED WITH WATER : Rays of light fall on the test tube where there is no water and gets ref...
The phenomenon of interference and diffraction have proved beyond any doubt that light is some from of wave motion. But these properties o...
The eye is the organ that allows us to see the world around us. It is perhaps the most wonderful and perfect optical instrument. Without e...
No comments:
Post a Comment