[填空题]
A 120-V rms 60-Hz voltage is to be rectif+wdcke- :cvt84r1)pxp vqun4k6l c0 iied with a full-wave rectifierxrpz gb01 or3k1/,zbmhs 8vf3 (Fig. Below), wh11/zvmbkso r 0hxrf 83,g3pzb ere $ R = 21\ \text{k}\Omega $ and $ C = 25\ \mu\text{F} $.
(a) Make a rough estimate of the average current. $I_{av}$ = mA(smooth)
(b) What happens if $ C = 0.10\ \mu\text{F} $?$I_{av}$ = mA (rippled)