전자석,electromagnet Copy: 전자석,electromagnet has comma Hide Show MKL 자성,magnetism 자기장,magnetic_field Cmp 영구자석 영구자석 https://ko.wikipedia.org/wiki/전자석 https://simple.wikipedia.org/wiki/Electromagnet https://en.wikipedia.org/wiki/Electromagnet ... 전자석 Up: 자석,magnet