A toroid is a doughnut-shaped object whose surface is a torus. Its annular shape is generated by revolving a circle around an axis external to the circle. Glazed doughnuts A doughnut, or donut, is a deep-fried piece of dough or batter. ... // Geometry In geometry, a torus (pl. ...

Image File history File links Picture of a toroid File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...

A coil of insulated wire in a doughnut shape (usually with a core of iron or similar metal) is an example of a toroidal object. These are used as inductors in circuits such as low frequency transmitters and receivers because they possess higher inductance and carry greater current than similarly constructed solenoids. They are also used as transformers in main power supplies. Toroidal coils reduce resistance, due to the larger diameter and smaller number of windings. The magnetic flux in a toroid is confined to the core, preventing its energy from being absorbed by nearby objects. A wire is a single, usually cylindrical, elongated strand of drawn metal. ... 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. ... An inductor is a passive electrical device that stores energy in a magnetic field, typically by combining the effects of many loops of electric current. ... There are many kinds of circuit An electric circuit interconnects electrical elements. ... Low Frequency or LF (sometimes called longwave) refers to Radio Frequencies (RF) in the range of 30-300 kHz. ... Inductance is a physical characteristic of an inductor, which is an electrical device that produces at any time a voltage proportional to the instantaneous rate of change in current flowing through it. ... In engineering, a solenoid is a mechanical device that converts energy into linear motion. ... Transformers - Typical electrical configurations. ... Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... Magnetic flux, is a measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field. ...

Mathematical Toroid

Image File history File links Mathematical toroid File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...

Above is an example of a mathematical toroid

See also

• Electronics
• Magnetic core
• Tesla coil