Answer :

Charge on Capacitor during Discharging (RC Circuit):

A capacitor of capacitance with charge C is being discharged through a resistor of resistance R. A switch S is also connected in series with the capacitor. The switch is initially open. At t=0, the switch is closed. The charge on the capacitor at any time t>0 is given by:

where and Qi is the initial charge on the capacitor.

Note that the capacitor begins charging at t = 0.

This is simply a discharging circuit.




Initial Charge,


( and )

We know that

(a) At t = 0,

(b) At t = 30μs

(c) At t = 120μs

(d) At t = 1.0ms

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