Mellina is an uncommonly occurring first name for females but a somewhat prominent last name for all people (#107565 out of 150436, Top 72%). (2000 U.S. Census). Below is a graphed comparison of the popularity of the girl name Mellina and corresponding names.ellina is an uncommonly occurring first name for females but a somewhat prominent last name for all people (#107565 out of 150436, Top 72%). (2000 U.S. Census). Below is a graphed comparison of the popularity of the girl name Mellina and corresponding names.
When an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such that it produces a current whose magnetic field opposes the change which produces it. The induced magnetic field inside any loop of wire always acts to keep the magnetic flux in the loop constant.araday's Law. Any change in the magnetic environment of a coil of wire will cause a voltage (emf) to be induced in the coil. No matter how the change is produced, the voltage will be generated.
As Ampere suggested, a magnetic field is produced whenever an electrical charge is in motion. The spinning and orbiting of the nucleus of an atom produces a magnetic field as does electrical current flowing through a wire. The direction of the spin and orbit determine the direction of the magnetic field. The strength of this field is called the magnetic moment. The motion of an electric charge producing a magnetic field is an essential concept in understanding magnetism. The magnetic moment of an atom can be the result of the electron's spin, which is the electron orbital motion and a change in the orbital motion of the electrons caused by an applied magnetic field.