The simplest complete circuit is a piece of wire from one end of a battery to the other. An electric current can flow in the wire from one end of the battery to the other, but nothing useful happens.
Tá torthaí a d'fhéadfadh a bheith dorochtana agat á dtaispeáint faoi láthair.
Folaigh torthaí dorochtana
Aiseolas