External examiner to an engineering student

External examiner to an engineering student :
Why does a capacitor stops DC but allows AC to pass through?

Student:
Sir, capacitor is like this
—| |—
DC comes straight like this
——
& the capacitor stops it.
But AC Goes UP-DOWN-UP-DOWN like this
   . — .
.’          ‘.
——–||—–||——-
              ‘.          .’
                ‘ — ‘
and jumps over the capacitor!

External : aftr 30 years of experience. Today I understood the concept of capacitor

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Atul Palandurkar

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