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




                                           Magnetic effects of current:
                                           When electric current passes
                                           through a conducting wire, it
                                              behaves as a magnet.





                                                                       Electromagnet:
                                                                   It behaves as a magnet as
                                                                 long as current flows through
                                                                          the wire.







                                                                                      Solenoid:
                                                          Factors affecting       A solenoid is a device in
                                                            Strength of         which a long insulated wire is
                                                           electromagnet          wound around a hollow
                                                                                     metallic core.
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