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Why ac current can pass through …

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Why ac current can pass through capacitor but dc current can not????

Posted by Rohit Singh 7 years, 4 months ago

CBSE > Class 12 > Physics

1 answers

Sansar Sumra 7 years, 4 months ago

For ac frequency is finite so opposition offered bycapacitor is small as Xc=1/C2π(frequency) Xc= 1/large value (finite) so ac can flow from capacitor as Xc is small for ac. For dc frequency is zero so Xc= 1/C2π[0] Xc=1/0=infinite Xc becomes infinite for dc so dc can not flow from capacitor . Capacitor block dc.

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