Page 1 - Lesson Notes
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SAI INTERNTIONAL SCHOOL
                                                        Class 8
                                                Home Assignment
                                                 Subject- Physics
                                        Ch- Some Natural Phenomena
                                        Subtopic- Methods of Charging


                   NOTES
                   Methods of charging an object:
                       1.  Charging by rubbing(friction)
                       2.  Charging by conduction
                       3.  Charging by Induction


                   Charging by rubbing: In this method the material is charged by rubbing it with
                   another material. During this process electrons are lost by one material which
                   becomes positively charged and electrons are gained by another material
                   which becomes negatively charged. Therefore during charging by rubbing the
                   object acquires equal and opposite charge.

                   Charging by conduction: In this method uncharged object is charged by
                   touching it with a charged object. During this process the electrons will flow
                   from one object to another and both objects get similar charge.

                   Charging by induction: In this method the uncharged object is charged from
                   a distance without actual contact. Charged object is brought close to the
                   uncharged object. Opposite charged can be induced on the object.
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