cirifka woqooyi waxa lagu qeexaa inuu yahay tiirka birlabeedka oo marka uu xor u yahay inuu wareego raadiyo cirifka woqooyi ee dhulka.Si kale haddii loo dhigo, tiirka woqooyi ee magnetka ayaa raadin doona cirifka woqooyi ee dhulka.Sidoo kale, cirifka koonfureed ee magnetka wuxuu raadiyaa cirifka koonfureed ee dhulka.
Magnet-ka joogtada ah ee casriga ah waxa laga sameeyey alaabo gaar ah oo lagu helay cilmi-baadhis si loo abuuro birlab aad u sii fiican.Qoysaska ugu caansan ee qalabka magnetka joogtada ah maanta waxaa laga sameeyay aluminium-nickel-cobalt (alnicos), strontium-iron (ferrites, oo sidoo kale loo yaqaan ceramics), neodymium-iron-boron (aka neodymium magnets, ama "super magnets") , iyo samarium-cobalt-magnet-material.(qoysaska samarium-cobalt iyo neodymium-iron-boron waxa si wada jir ah loogu yaqaannaa dhulka naadir-ka ah).
Diirada saar bixinta xalalka magnetka 30 sano