Magnet , around for ferrite and SmCo, about for NIB and lower for flexible ceramics, but the exact numbers depend on the grade of material. An electromagnet, in its simplest form, is a wire that has been coiled into one or more loops, known as a solenoid. When electric current flows through the wire, a magnetic field is generated. It is concentrated near (and especially inside) the coil, and its field lines are very similar to those of a magnet. The orientation of this effective magnet is determined by the right hand rule. The magnetic moment and the magnetic field of
Induction cooking Induction cooking Induction cooking heats a cooking vessel electrically by magnetic induction, instead of by radiation or thermal conduction from an electrical heating element, or from a flame. Because inductive heating directly heats the vessel, very rapid increases in temperature can be achieved, and changes in heat settings are instantaneous. In an induction cooktop ("induction hob" or "induction stove"), a coil of copper wire is placed under the cooking pot and an alternating electric current is passed through it. The resulting oscillating magnetic field induces an electrical current in the pot. This large eddy current flowing through the resistance of