Circuit Calculation - Mesh Analysis

[brighton53]

Homework Statement

Hi, I'm trying to find what I(t) and V2(t).
https://dl.dropbox.com/u/672601023

The Attempt at a Solution

- Firstly I'm changing to impedances and then predefining a few new variables
- zc1, zr1, zc2, zr2 and zc3
- then I'm going to do mesh analysis
https://dl.dropbox.com/u/67260102/as.png

and then the current I'm trying to work out should be the answer of I2.

and the voltage I'm trying to also workout will do Zc3 * I3.

Is all of this correct?

 

[gneill]

Hi brighton53, Welcome to Physics Forums.

Sure, you can solve the problem that way if V is a fixed frequency sinusoidal source. It's a bit of overkill, but will get the job done.

Note that C1 is directly across the voltage supply, and that ideal voltage supplies are immune to loading. So if you're looking for I(t) and V2(t) you can ignore C1 entirely. Then you could combine R1 with C2, and R2 with C3 into two net impedances and solve as a voltage divider...