Change to Ukrainian interface versionChange to English interface versionChange to Russian interface versionHome pageClear last query resultsHelp page
Search for specific termsBrowse by subject categoryBrowse alphabetical list of titlesBrowse by organizationBrowse special topic issues

close this bookElectrical Machines - Basic Vocational Knowledge (IBE - Deutschland; 144 pages)
View the documentIntroduction
Open this folder and view contents1. General information about electrical machines
close this folder2. Basic principles
close this folder2.1. The magnetic field
View the document2.1.1. Definition and presentation of the magnetic field
View the document2.1.2. Magnets Magnetic field
View the document2.1.3. Magnetic field of a current-carrying conductor
View the document2.1.4. Magnetic field of a current-carrying coil
View the document2.1.5. Magnetic fields in electrical machines
Open this folder and view contents2.2. Measurable variables of the magnetic field
Open this folder and view contents2.3. Force action of the magnetic field
Open this folder and view contents2.4. Voltage generation through induction
Open this folder and view contents3. Execution of rotating electrical machines
Open this folder and view contents4. Synchronous machines
Open this folder and view contents5. Asynchronous motors
Open this folder and view contents6. Direct current machines
Open this folder and view contents7. Single-phase alternating current motors
Open this folder and view contents8. Transformer
 

2.1.2. Magnets Magnetic field

Bodies of ferromagnetic materials (e.g. iron, nickel, cobalt, etc.) have a magnetic field in their vicinity.


Figure 2 - Magnetic field of a permanent magnet

Direction of field lines

As indicated in Figure 2 the field lines emerge from the north pole and enter the south pole. Inside the magnet the field lines run from the south to the north pole.

Magnetic poles always arise pairwise.

Magnetic force action law - magnets interact with each other.


Figure 3 - Force actions between magnets (attraction)


Figure 4 - Force actions between magnets (repulsion).

1 Force action

Opposite poles attract each other, similar poles repel each other.

to previous section to next section

[Ukrainian]  [English]  [Russian]