It has been suggested that this article or section be merged with induction cooker. (Discuss)

An induction hob or induction stove is a cooker that uses electromagnetic induction in the hob (stovetop) to heat a metal cooking pot. The heating is achieved by two different means: Wikipedia does not have an article with this exact name. ... Jump to: navigation, search It has been suggested that this article or section be merged with induction hob. ... A stove is a heat-producing device. ... Electromagnetic induction is the production of an electrical potential difference (or voltage) across a conductor situated in a changing magnetic flux. ... A hob is a term used in Pennsylvania Dutch Country to describe a cast iron griddle. ... Jump to: navigation, search Hot metal work from a blacksmith In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds, and metals are sometimes described as a lattice of positive ions (cations) in a cloud of electrons. ...

1. Magnetic hysteresis. The rapidly oscillating magnetic field causes power in the magnetic field to be converted to heat in the ferromagnetic base of the pot due to hysteresis. The amount of heat produced is proportional to the area of the hysteresis loop. This is primary source of heat in an induction hob.
2. Eddy currents. The magnetic field also produces electric currents (known as eddy currents) in the metal base of the pot, and these cause resistive heating of the metal.

The heat from the pot is then transferred to the food by conduction. Jump to: navigation, search Hysteresis is a property of systems (usually physical systems) that do not instantly follow the forces applied to them, but react slowly, or do not return completely to their original state: that is, systems whose states depend on their immediate history. ... Jump to: navigation, search Current flowing through a wire produces a magnetic field (M) around the wire. ... Jump to: navigation, search A red-hot iron rod cooling after being worked by a blacksmith. ... Ferromagnetism is a phenomenon by which a material can exhibit a spontaneous magnetization, and is one of the strongest forms of magnetism. ... Jump to: navigation, search Hysteresis is a property of systems (usually physical systems) that do not instantly follow the forces applied to them, but react slowly, or do not return completely to their original state: that is, systems whose states depend on their immediate history. ... Jump to: navigation, search A red-hot iron rod cooling after being worked by a blacksmith. ... Jump to: navigation, search Hysteresis is a property of systems (usually physical systems) that do not instantly follow the forces applied to them, but react slowly, or do not return completely to their original state: that is, systems whose states depend on their immediate history. ... As the circular plate moves down through a small region of constant magnetic field directed into the page, eddy currents are induced in the plate. ... As the circular plate moves down through a small region of constant magnetic field directed into the page, eddy currents are induced in the plate. ... Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... Heat flow along perfectly insulated wire Heat conduction is the transmission of heat across matter. ...

An advantage of this system is that the electromagnet does not need to be in direct contact with the pot, so the hob can be sealed beneath a heat-resisting glass-ceramic sheet which is easily cleaned. Another feature is that the hob can heat only pots and pans that have a ferromagnetic bottom, and if left on accidentally will not burn nonmetals such as human skin. Glass-ceramic is a mixture of glass and ceramic materials (mainly lithium-, silicon-, or aluminium-oxides) yielding a material that is impervious to even extreme temperature shocks. ... Ferromagnetism is a phenomenon by which a material can exhibit a spontaneous magnetization, and is one of the strongest forms of magnetism. ...