Hello.
I'm having here some difficulties with this exercise:
If I consider the flow of current as it is shown in the image attached, I will get the following equation:
3K I - 2KI + 5KI - 12 = 0
Now, If I consider the flow of current the opposite as is shown, I will get this different one:
12 + 5KI + 2KI+3KI = 0
Which one is right? And why? If I was doing my test, in the first one I would get a 2mA intensity current, while in the later one I'd get -1.2mA. I thought that switching the flow of current would only make the signal change, not the magnitude of the current! How is this?
When I'm solving exercises I use the following rule: When I am going through a loop, If I find :
a) a tension source with a + in front of me, it counts as positive, otherwise, negative.
b) an resistence, if I am going in the direction of the current, it counts as positive, otherwise, negative.
What am I doing wrong in my approach? Thanks!
I'm having here some difficulties with this exercise:
If I consider the flow of current as it is shown in the image attached, I will get the following equation:
3K I - 2KI + 5KI - 12 = 0
Now, If I consider the flow of current the opposite as is shown, I will get this different one:
12 + 5KI + 2KI+3KI = 0
Which one is right? And why? If I was doing my test, in the first one I would get a 2mA intensity current, while in the later one I'd get -1.2mA. I thought that switching the flow of current would only make the signal change, not the magnitude of the current! How is this?
When I'm solving exercises I use the following rule: When I am going through a loop, If I find :
a) a tension source with a + in front of me, it counts as positive, otherwise, negative.
b) an resistence, if I am going in the direction of the current, it counts as positive, otherwise, negative.
What am I doing wrong in my approach? Thanks!
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