Traits of a Bar Magnet: North & South, No wire, Does not change strength, Traits of an Electromagnet: On and off switch, Wire, Needs electric current, Traits that Both Share: Magnetic , Energy Flow, Can pick up steel and iron, Why Electromagnets will NOT work: Wire is not insulated, Core is made of wood, NOT iron or steel, Winds (wires?) not wrapped enough, Item to pick up (ex-washers) is not Iron or steel,

Electromagnetic Sort

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?