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

Calculate i2, given that r1=12, r2=6, r3=12, r4=6.

There is a 20V source.

The first step here is calculate Req, I believe.

http://media.newschoolers.com/uploads/cache/images/1222468444-632813-600x325-1222468266Untitled2423423.jpg [Broken]

2. Relevant equations

Req=(r1 ll r2) + (r3 ll r4)

note: ' ll ' means parallel.

3. The attempt at a solution

1/Req = 1/(6+12)+1/(6+12)

Req=9

The answer says that Req should be 8. Is my formula for Req correct?

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# Homework Help: Req Calculation. Very basic

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