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SAI International School
                                                        Class VII
                                                        Mind Map
                                                   Subject: Physics
                                     Ch- Electric current and simple circuit
                                      Subtopic: Heating effects of Current












                                                       Heating effects of current:
                                                     When electric current passes through a
                                                   conductor, electrical energy is converted into
                                                               heat energy






                     Heating Elements:                        Electric fuse :                           MCB:
                                                                                                 Automatically operated
                    High resistance and                    Fuse is a safety device               switch which trips down
                                                            which prevents the
                     high melting point                    damage to an electric                 and protects an electric
                        conductor                                circuit                          circuit from damage







                   Nichrome used in electric     Ceramic Fuse              Cartridge Fuse
                           iron









                       Tungsten inBulb
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