Page 133 - Science Class 06
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              Electric Current and Circuits







               •  Electric Energy                                •  Sta c and Current Electricity

               •  Electric  Charges                              •  Flow of  Electric  Current
               •  Electric Circuit                               •  Conductor
               •  Insulator                                      •  Is Water a Conductor or an Insulator?

              Electricity  is  all  around  us—powering                            ELECTRIC ENERGY

              technology like our cell phones, computers,           Electric  energy  is  also  called  electricity.
              lights,  soldering  irons  and  air  condi oners.     Electric charges and currents a ract or repel
              It’s tough to escape it in our modern world.          each  other,  i.e.,  they  exert  forces  on  each
              Even when you try to escape electricity, it’s         other.  Thus,  work  needs  to  be  done  in
              s ll  at  work  throughout  nature,  from  the        general to move them with respect to each

              lightning in a thunderstorm to the synapses           other. The energy associated with this work
              inside  our  body.  But  what  exactly  is            is called electric energy.
              electricity?  This  is  a  very  complicated

              ques on  and  as  you  dig  deeper  and  ask
              more  ques ons,  there  really  is  not  a
              defini ve  answer,  only  abstract  represen-           Work is defined as the force that acts on
              ta ons of how electricity interacts with our           a body to move it.
              surroundings.                                          Energy  is  defined  as  the  capacity  to  do

                                                                     work.

                                                                         STATIC AND CURRENT ELECTRICITY

                                                                    When we rub two different materials, they

                                                                    get electrified. For example, when a piece of
                                                                    amber is rubbed with a woollen cloth, the
                                                                    amber  acquires  the  property  of  a rac ng



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