1. The problem statement, all variables and given/known data In a AC to DC rectifier the DC signal was Vdc= (6.3+0.4)V and AC signal was Vac=(0.25+0.04)mV. What is the error on the quality factor of the rectifier? 2. Relevant equations σQ=√((σr^2)/(Vdc^2 )+(Vr^2 σdc^2)/(Vdc^4 )) 3. The attempt at a solution I know this is the correct formula and I also know that Vac = Vr. I have tried using this formula in many ways including plugging in the data as it is and converting the Vac data to volts instead of millivolts but it still gives me the wrong answer. For example, when I do that I got error on σQ = 0.000007. Any help as soon as possible would be much appreciated.