Page 1 - Lesson Note- Introduction and Sources of Electricity
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SAI INTERNATIONAL SCHOOL

                                                        Class 6
                                                   Lesson Notes
                                                 Subject- Physics

                                          Ch. – Electricity and Circuits
                            Subtopic- Introduction and Sources of Electricity



               Electricity is a form of energy which flows through a conductor and it can be
               converted into different forms of energy such as light energy, mechanical energy and
               sound energy etc.


               Different sources of electricity are-
                      Hydro power plant
                      Thermal power plant
                      Geothermal plant
                      Wind mills
                      Solar panel
                      Generator
                      Primary and secondary cell


               Components related to electricity-
                      Electric cell
                          o Electric cell is a device which is used as a source of electricity.
                          o Cell has a positive (+) and a negative (-) terminal.
                          o The small metal cap at one end of the cell is the positive terminal.
                          o The other end of the cell has a metallic disc,which is the negative
                              terminal.
                          o A combination of two or more cells is called a battery.
                          o The chemicals inside the cell react with each other and produce
                              electric current.

               Symbol of cell and battery:







               Cell:











               Battery:                             or
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