Continuos flow of charges: electric current §Flow of charges between two regions with opposite net charges §electrons (negative charges) flow from the lower electrical potential points to ones with higher electric potential §positive charges flow from points with higher electric potential to points with lower electric potential §result of flow --> annihilation of charges §to maintain a constant flow, one must maintain a constant potential difference: constant tension §use of a Van der Graff generator (we invest mechanical energy to get electric energy) §use of batteries (we invest chemical energy)
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