Is My Capacitor Fully Charged?

AI Thread Summary
A capacitor in a series circuit with a DC voltage source will reach a fully charged state when the voltage across its terminals matches that of the source, resulting in no current flow. While the charge stored in the capacitor increases with a higher DC voltage, the capacitance itself remains constant, defined as the ratio of charge to voltage (C=Q/V). Misunderstandings about capacitance increasing with voltage were clarified, emphasizing that only the charge increases. The discussion concluded with an acknowledgment of this clarification. Understanding these principles is essential for accurate circuit analysis.
Gaurav sandhu
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suppose i have a circuit,in which a capacitor and resistances are connected in series with a DC voltage source.
then after a long interval of time we know that capacitor will have same voltage across its terminal as that of DC voltage source and no current flow in the circuit.
so, can i say at that time, my capacitor is fully charged...
 
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Yes, fully charged at that voltage. If you raise the DC voltage, the capacitor can store more charge.
 
anorlunda said:
Yes, fully charged at that voltage. If you raise the DC voltage, the capacitor can store more charge.
that means capacitance of a capacitor is increases with increase in DC voltage around it !

i think this is not true...
 
Gaurav sandhu said:
that means capacitance of a capacitor is increases with increase in DC voltage around it !

i think this is not true...

No. The charge stored increases, not the capacitance. Capacitance C is defined as the ratio of charge Q to voltage V. C=Q/V
 
anorlunda said:
No. The charge stored increases, not the capacitance. Capacitance C is defined as the ratio of charge Q to voltage V. C=Q/V
ok...i got it...

thanks a lot...
 
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