- #1
tomyfreebie
- 3
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I'm confused about how to assign the voltage polarities on circuit elements. Below is an example about what I'm confused about:
http://img520.imageshack.us/img520/5075/circuitly2.jpg
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.
http://img520.imageshack.us/img520/5075/circuitly2.jpg
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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