# Homework Help: Quick question Superposition method

1. Oct 18, 2012

### Marchese_alex

Ok, can anyone tell me if my steps are correct. Find volts in the 30ohms

part1
1. eliminate current source
2. transform battery to current source
3. applied mesh method to find current at 30ohms

part2
1. eliminate battery source
2. applied mesh method to find current at 30ohms

part3
1. to find the current at 30ohms I substracted the current that I got from doing part 1 and doing part 2 to get the actual current at the 30ohms
2. Finally used ohms law to find voltage

Is this correct? I know there are easier ways but I did it this way

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Last edited: Oct 18, 2012
2. Oct 18, 2012

### Staff: Mentor

Your loop equations all look okay, but something seems to have gone wrong with your determination of I4 in the first part (where you suppressed the current source and converted the voltage source).

Why not consider combining the parallel 20, 40, and 60 ohm resistors to begin with; it'd make your analysis simpler.