Discharging a capacitor - how long does it take

[gneill]

just to check though, for a discharging capacitor, is the voltage across the resistor the same as that cross the capacitor BUT the for a charging capacitor the sum of the p.d's across the capacitor and resistor = source (i.e: they are not the same at all points)??

For the typical charging capacitor circuit, the sum of the resistor and capacitor p.d.'s is constant (equal to the voltage source).

Of course, for any complete "tour" around a given circuit the sum of all potential changes must be zero according to Kirchhoff.

 

[jsmith613]

For the typical charging capacitor circuit, the sum of the resistor and capacitor p.d.'s is constant (equal to the voltage source).

yes...thanks :)

Of course, for any complete "tour" around a given circuit the sum of all potential changes must be zero according to Kirchhoff.

for this I just learn sum of p.d across componenets = emf of source (assuming wire have no resistance / no internal resistance)