Page 1 - MM
P. 1

SAI International School
                                                        Class VII
                                                        Mind Map
                                                   Subject: Physics
                                     Ch- Electric current and simple circuit
                                               Subtopic: Electric Bell









                                                      Electric Bell:
                                              An electric bell is a mechanical bell
                                              which functions on the principle of
                                               an ‘electromagnet or magnetic
                                                 effects of electric current’








                                                 Construction                        Working
   1