elpaco Posted September 29, 2015 Report Share Posted September 29, 2015 Am o bara de metal imi sta ca un ghimpe in coasta, busola imi arata in apropierea ei doua campuri magnetice la extremitati probabil N-S si nu e bine pentru fengsuiu meu polaritatea.Cum pot inversa polaritatea barei de metal de la distanta fara sa o ating? Quote Link to comment Share on other sites More sharing options...
Zatarra Posted September 29, 2015 Report Share Posted September 29, 2015 Inversezi bornele care alimenteaza CU CUrent acea bara. Alta idee n-am. Quote Link to comment Share on other sites More sharing options...