Electromagnetic

Electromagnet:

From the conclusion of the magnetic effect of electric current, we can know that when a current passes through a wire, a magnetic field will be generated around it. An electromagnet is a multi-turn coil wrapped around a magnetically conductive object and a current is passed through it. The magnetic field generated by the current is passed through. The direction can be confirmed using Ampere's right-hand rule. The bending of the four fingers is the direction of the current, and the pointing of the thumb is the direction of the magnetic field. This component that uses current to drive a magnetically conductive object to generate a magnetic field is called an electromagnet. Magnetically conductive objects are usually used Silicon steel sheets, in addition to good magnetic permeability, can also reduce the amount of residual magnetism.

Characteristics of electromagnets:

The difference between electromagnets and permanent magnets is that electromagnets can change the polarity of the electromagnet by changing the direction of the current. In addition, the polarity of the electromagnet can be changed by increasing the current, increasing the number of turns, or replacing the coil with a better conductor. Magnetic objects can enhance the size of the magnetic field, and using it with silicon steel can greatly reduce the amount of residual magnetism and avoid affecting product performance. Compared with permanent magnets, electromagnets can have more flexible adjustment space. Therefore, electromagnets are actually widely used in various fields such as transportation, machinery, electronics, and even medical industry.