miercuri, 30 mai 2012

Campuri magnetice.


Campul magnetic pentru un fir conductor parcurs de curent electric


Campul magnetic in jurul unui fir conductor parcurs de curent electric este format dincercuri concentrice cu centrul pe conductor, fiind amplasat intr-un plan perpendicular peconductor.



Campul magnetic al unei spire parcurse de curent electric

Campul magnetic al unei spire (conductor circular) parcurse de curent electric este format din doua campuri magnetice generate de fiecare parte a spirei .
Liniile de camp magnetic  se dispun precum zalele unui lant.


Campul magnetic al unui solenoid parcurs de curent electric

Solenoid=bobina parcursa de curent electriccare se comporta ca un magnet bara.
Campul magnetic este in interiorul solenoidului parcurs de curent electric format dinlinii paralele si echidistante, ceea ce inseamna ca este un camp magnetic uniform.




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