In current through a conductor joule heat generated by the electric furnace for the heat source.
以电流通过导体所产生的焦耳热为热源的电炉。
2
Electromagnetic induction: when a conductor of a closed electric circuit move cutting the magnetic induction lines, the conductor produces current.
电磁感应现象：闭合电路的一部分导体在磁场里做切隔磁感线运动时，导体中就产生电流的现象。
3
Loosely stated, this says that an electrical current in one conductor will induce a current in a second, wholly separate, conductor that shares the same magnetic field.