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                         Neutral point


                                                                                        
                                                        

                                                b         f                    f       R
                                               h        h                     h

                                                   ln                           n                             Prof. Ramesh Singh, Notes by Dr.   Singh/ Dr. Colton


                                               1        µ                      H       2


                                                   −                                    

                                                     b                             tan
                                                   H

                                                                          h  f     R

                                               1        2

                                                   =                               =


                                                     n                              n
                                                   H                               φ
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