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.
The negative sign in Faraday's law comes from the fact that the emf induced in the coil acts to oppose any change in the magnetic flux. This is summarized in Lenz's law. Lenz's law: The induced emf generates a current that sets up a magnetic field which acts to oppose the change in magnetic flux.Another way of stating Lenz's law is to say that coils and loops like to maintain the status quo (i.e., they don't like change).he magnetic flux is a measure of the number of magnetic field lines passing through an area. If a loop of wire with an area A is in a magnetic field B, the magnetic flux is given by: If the flux changes, an emf will be induced.