- #1

Numbskull

- 54

- 1

## Homework Statement

[/B]

Find

*I*by mesh and nodal analysis

## Homework Equations

## The Attempt at a Solution

##V_{10}## is defined at the junction of ##Z_1##, ##Z_2## and ##Z_4##.

##V_{20}## is defined at the junction of ##Z_2##, ##Z_3## and ##Z_5##.

##0V## is defined at the junction of ##V_1##, ##Z_4##, ##Z_5## and ##V_2##.

I have completed the mesh analysis without too much difficulty (and those answers are correct according to other threads with this question). I thought I was on the right track with the nodal analysis but the answers are close enough to be wrong, but not far enough away to look like a major error somewhere.

I have used Wolfram to do the heavy lifting, and have attached the PDF of the input and the result for ##V_{10}##. When I calculate the current through ##Z_4## (again using Wolfram entering values in complex form), I get the result of ##-8.7792 + j16.5853## when converted to polar is ##18.765## Amps compared to ##19.59## for the mesh analysis, (although the angle is off too).

I've spend hours and hours trying to figure this out, but can't quite get the answers to agree. I've also been through the process of trying to identify compound rounding errors but I don't think it's that. I would appreciate some help or pointers