(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I need help with determining the current through the 1Ω resistor.

http://img403.imageshack.us/img403/5422/acex22.jpg [Broken]

The trouble I have is that the voltage sources are phased as given in picture, and I got stuck on how to deal with these phases when calculating the current with impendance.

I know I need to count the impendance, but I get the wrong answer when I count the current from every source (superposition theorem).

2. Relevant equations

If I look at it through the superposition theorem and current divider rule, I should get the correct answer with regards to current through the 1 Ω resistor.

I am absolutely certain that I don't do the voltage right, i.e. 5 Δ 30 and 5 Δ -30 . Is this correct thinking?

3. The attempt at a solution

Back to superposition theorem, I can count the total impendance for every voltage source. Then I divide the voltage, example

(5 Δ 30) / Z Δ ω = I

From there I go to the current divider rule and count the current through the resistor per source. This is repeated with the upper source as:

(5 Δ -30) / Z Δ ω = I

------------------

I've handled these problems well without the voltage phases, but I don't think I handle the voltage phases rather well here. I would really appreciate any pointers on how to proceed!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: AC Circuit Superposition

**Physics Forums | Science Articles, Homework Help, Discussion**