Duration of Charging a capacitor

[moatasim23]

How we calculate the duration of depositing a specific amount of charge via a battery on a pure Capacitor when resistance is not present..and we can't use the formulas of RC combinatio?

 

[BruceW]

i'm not certain, but I think you'd need a quantum treatment, since that is essentially a superconductor.

 

[sophiecentaur]

How we calculate the duration of depositing a specific amount of charge via a battery on a pure Capacitor when resistance is not present..and we can't use the formulas of RC combinatio?

This is an essentially classical problem. Resistance is never zero - even in a real circuit with superconductors in it. With low resistance, RC time constants can be very low but all circuits with a physical size will radiate EM power when the current is varying. This radiated power shows up as a resistance somewhere in your circuit so there is a finite value for the time constant.