http://lectureonline.cl.msu.edu/~mmp/kap20/RR506a.htm
http://micro.magnet.fsu.edu/electromag/java/ohmslaw/
http://usuarios.multimania.es/pefeco/resisserie/serie.htm
http://lectureonline.cl.msu.edu/~mmp/kap20/RR506a.htm
http://micro.magnet.fsu.edu/electromag/java/ohmslaw/
http://usuarios.multimania.es/pefeco/resisserie/serie.htm