- #1

lionely

- 576

- 2

## Homework Statement

C1= 2.0 μF

C2= 5.0 μF

the resistor has a resistance of 0.10 MΩ

The circuit shows the charging of a capacitor

a) At t=0 the switch is closed. What is the initial measuring on the ammeter?

b) After the current has decayed to zero what are the voltages at points A,B and C?

## Homework Equations

Q= Qo e^(-t/cr)

## The Attempt at a Solution

Well at t= 0 the current should be 0

and then for the b) the current should decay to zero at t= ∞ , right? But if I use this idea I can't calculate any voltages and I just get confused.

At first I thought since the current decayed to zero... the capacitor were fully charged so . I found the effective capacitance

Ce= 1.43μF

Q=CV

Q= 1.43x10^-6 x 3 = 4.29x10^-6C

Then I used that to find the voltage at each point.

But my teacher didn't agree...

Help is much appreciated!!