[복사열전달] Ampere’s circuital law

A magnet is shown in Figure below. The relative permeability of the soft Fe yoke is 3000. If a current I = 1 A is to produce a field of about 100 gauss in the gap, how many turns are required? Constraints: consider a closed path whose horizontal length and height get comparable to those of the magnet. Ampere’s circuital law에 따르면 마그넷 내부의 H : B / (μr x μ0) 마그넷 외부의 H : B / μ0 자석을 둘러싸도록 폐곡선을 정의하고 이를 선적분 한다....

원문링크 : [복사열전달] Ampere’s circuital law