Xc=1/(2Pifc) * O/ a) w* e, A) [ xif f=0 Xc is infinite, so capacitor block DC. 1 ?& V! N6 b5 d- l5 Wfor AC, frequence is 60Hz(in north american), so Xc is a specific value. as a result , it can conduct AC.
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I would like to ask a question, just for curiosity, if you do not mind.) z6 C. E2 l6 k- B) ?5 k, P
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Is that a real question during your interview for an electrician job?
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发表于 2009-1-12 19:16
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发表于 2009-1-16 21:47