Xc=1/(2Pifc)$ x' N! X6 P0 ]* ^* J3 V
if f=0 Xc is infinite, so capacitor block DC. 6 d% j2 }2 g3 |5 ~' F% yfor AC, frequence is 60Hz(in north american), so Xc is a specific value. as a result , it can conduct AC.
( K6 G9 F6 ?3 I; r% V
4 [8 \5 {: M9 @4 x% C
I would like to ask a question, just for curiosity, if you do not mind. / G' c' h- J U6 Y2 {5 E1 I8 H, z) e6 S
Is that a real question during your interview for an electrician job?