Magnetic flux density (B) is the quantity of magnetic flux (Φ) per unit area (A), measured at right angles to the magnetic field.
A magnet produces a flux of 180 μT through a rectangular region of width 30 mm and height 40 mm, measured at right angles to the field. Find the total magnetic flux produced by an electromagnet through a circular pole face of radius 50 mm, if the flux density is 1.8 T.
The magnetic flux through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface. The magnetic flux linkage through a coil is the product of the number of turns of the coil and the magnetic flux density normal to the surface and the area of the surface. One weber is the quantity of magnetic flux passing through an area of 1 square metre when the flux density normal to the area is 1 tesla.


Does it mean that we should not use this method or the question will not ask us in such case does it?
And if there’s a way to calculate to calculate the average emf from this method, in the case i raised, will that give us average root mean square of emf. The magnetic flux through the coil is maximum when the coil is perpendicular to the magnetic field.
The magnetic field strength is, therefore, defined as the magnetic flux per unit cross sectional area perpendicular to its direction . Lenz's law state that an induced current always flows in the direction to oppose the change in magnetic flux.
By Lenz's law, an induced current flows in a direction to reduced the increased in magnetic flux.


Lenz's law predict the flows of induced current in compliance with the conservation of energies. As dictated by Lenz's Law, the electrical energies of an electric current flowing in the solenoid is due to the work down on moving the bar magnet.



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Comments

  1. INFINITI_girl
    Electronic devices emanate an electromagnetic field (EMF.
  2. Djamila
    The concern of obtaining each other, they are the two.