In mathematics, a toroid is a surface of revolution with a hole in the middle. The axis of revolution passes through the hole and so does not intersect the surface. [1]

The toroid is a useful device used in everything from tape heads to tokamaks. Finding the magnetic field inside a toroid is a good example of the power of Ampere's law. The current …

Mar 3, 2025 · The turns of a toroid form a helix, rather than circular loops. As a result, there is a small field external to the coil; however, the derivation above holds if the coils were circular.

Jun 19, 2025 · When electrical current passes through a toroid, it creates a magnetic field around it. This magnetic field is strongest inside the toroid and weaker outside. The way the magnetic …

The earliest known use of the word “toroid” dates back to the 1880s, and it was first recorded in the writings of George Carr. The toroid’s unique shape and the way it confines the magnetic …

The meaning of TOROID is a surface generated by a closed plane curve rotated about a line that lies in the same plane as the curve but does not intersect it.

Jun 11, 2023 · A toroid is a donut-shaped magnetic coil, typically made of a ferromagnetic core wrapped with wire. Toroids are used in various electrical applications, including transformers …

The first toroid was invented in 1830 by the physicist Michael Faraday. He noticed that the change in the magnetic field resulted in the voltage in a wire. This phenomenon is known as Faraday’s …

A toroid is a doughnut-shaped object that is commonly used in electromagnetism and physics to describe the magnetic field generated by current flowing through a coil of wire wound in a …

4 days ago · A surface of revolution obtained by rotating a closed plane curve about an axis parallel to the plane which does not intersect the curve. The simplest toroid is the torus. The …