ECSE 361 Lecture Notes - Lecture 5: Magnetic Field, Magnetic Flux, Magnetic Circuit
4 Dec 2017
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Document Summary
Ampere"s experiment is illustrated in figure 1 where there is a force on a small current element. I2l when it is placed a distance, r, from a very long conductor carrying current i1 and that force is quantified as: li. Ampere"s experiment of forces between current carrying wires. The magnetic flux density, b, is defined as the first portion of equation (2. 1) such that: From (2. 1) and (2. 2) we see the magnetic flux density around conductor 1 is proportional to the current through conductor 1, i1, and inversely proportional to the distance from conductor 1. Looking at the units and constants handout given in class, or from (2. 2) the units of, b, are seen as. Ma thus , called permeability, has units of. More commonly, the relative permeability of a given material is given where. Since a newton-meter is a joule, and sav.
