![]() In more advanced physics, the field line analogy is dropped and the magnetic flux is properly defined as the surface integral of the normal component of the magnetic field passing through a surface. The magnetic flux is the net number of field lines passing through that surface that is, the number passing through in one direction minus the number passing through in the other direction (see below for deciding in which direction the field lines carry a positive sign and in which they carry a negative sign). Because it allows us to measure the strength of the magnetic field per unit of length, area, or volume. The magnetic flux through some surface, in this simplified picture, is proportional to the number of field lines passing through that surface (in some contexts, the flux may be defined to be precisely the number of field lines passing through that surface although technically misleading, this distinction is not important). RELATION BETWEEN MAGNETIC FIELD AND DENSITY. Since a vector field is quite difficult to visualize at first, in elementary physics one may instead visualize this field with field lines. Abstract: The following sections are included: INTRODUCTION. The magnetic interaction is described in terms of a vector field, where each point in space is associated with a vector that determines what force a moving charge would experience at that point (see Lorentz force). It has a very high saturation flux density, Bs oMs 2.2 T, and its cubic crystal structure leaves it with a small magnetocrystalline anisotropy, K1 +4.8 × 104 J/m3, and small magnetostriction, 100 +21 × 106. Each point on a surface is associated with a direction, called the surface normal the magnetic flux through a point is then the component of the magnetic field along this direction. Answer (1 of 5): Depends use this formula: E 4.44 f NAB E is primary voltage applied N is turns on primary winding A is magnetic ckt cross sec area enclosed by winding B is flux density solve for B. What is the flux density of iron Pure iron is the prototypical soft magnetic material. ![]()
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