I'm confused about how to assign the voltage polarities on circuit elements. Below is an example about what I'm confused about:(adsbygoogle = window.adsbygoogle || []).push({});

http://img520.imageshack.us/img520/5075/circuitly2.jpg [Broken]

So applying the Kirchoff's Law to the left loop, I get:

-5 + 54000i1 - 1V + 186000i1 = 0

So far so good. It's doing the Kirchoff's Law to the right loop that I get confused:

If let's say we do a clockwise loop starting below the 8V, we'll get

-186000i1 + v + ... + 8 = 0

So in this case, how do I know where to place the positive terminal on the 1.8k resistor?

because it does make a huge difference where I place it.

Any help would be greatly appreciated, thank you.

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# Homework Help: Assigning voltage polarities

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