Capacitor pass AC

Why does a capacitor block DC

External (to student) : "Why does a capacitor block DC but allow AC To pass through ?

Student: See, a capacitor is like this ---| |--- , OK. DC comes straight, like this ----------, and the capacitor stops it. But AC,goes UP, DOWN, UP DOWN and jumps right over the capacitor!" ------------------- good one : - )


Author: lkprabu05 Aug 2010 Member Level: Gold   Points : 0