Basics
Laws
Field Direction
Field Strength
Field Properties
500
The shape of this device is often compared to a donut, and it generates a circular magnetic field within its core.
What is a toroid?
500
The magnetic field inside a toroid is directly proportional to both the number of turns and this quantity flowing through the coil.
What is the current?
500
The magnetic field inside a toroid follows the direction indicated by this hand rule, when the fingers curl in the direction of the current.
What is the Right Hand Thumb rule?
500
In a toroid with a current I and N turns, the magnetic field strength B inside depends inversely on this distance from the center.
What is the radius?
500
Unlike in a bar magnet, the magnetic field outside a toroid is approximately this.
What is zero?