AC Resistance: The resistance of a device to a small ac signal. The ratio of a voltage change to a current change. The key idea here is changes about an operating point. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostAC Load Line Next PostAC Saturation