How Does a Battery Charge a Capacitor in a Direct Current Circuit?

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 2K views
logearav
Messages
329
Reaction score
0

Homework Statement



capacitor blocks Direct current. but how can a battery which is a source of direct current charges a capacitor.

Homework Equations





The Attempt at a Solution


 
Physics news on Phys.org
hi logearav! :smile:
logearav said:
capacitor blocks Direct current. but how can a battery which is a source of direct current charges a capacitor.

a capacitor doesn't blocks direct current until it's fully charged

loosely speaking, the capacitor doesn't block current, it behaves like a battery that opposes the real battery …

as the capacitor charges up, the opposing voltage increases; when the capacitor is fully charged, the opposing voltage equals the battery voltage, so the total circuit voltage is zero and no current flows :wink:
 


Thanks a lot tiny-tim. I got it now.