<prompt> Translate the following text to EnglishIlibadilika kuwa umeme wote hapa ulikuwa DC, uliotengenezwa kwa kuamuru elektroni katika waya kusonga katika mwelekeo mmoja, na haukufaa kabisa na AC.  <response>: It turned out that all electricity here was d.c., conjured up by commanding the electrons in a wire to move in one direction, and completely useless with a.c. 