Views: 1 Author: Site Editor Publish Time: 2022-06-30 Origin: Site
The direction of the magnetic field of the electromagnet can be judged by Ampere's rule.
Amperidine is a rule that indicates the relationship between the direction of the magnetic induction line of the current and current excitation magnetic field, also called the right-handed screw rule.
(1) Ampere's rule in the energized straight wire (Ampere's rule one): Hold the energized straight wire with your right hand, point the thumb at the current direction, and point the four fingers to the direction of the magnetic field around the straight wire.
(2) Ampere's rule in the energized solenoid (Ampere's rule 2): Hold the energizing solenoid with your right hand so that the four fingers bend in the same direction as the current, then the end pointed by the thumb is the energizing solenoid N pole
