Thursday, 13 September 2018

dc - Node Analysis - current calculation


I have a cicuit here that's giving me trouble when finding out what V1 and V2 equal.The book says that I1 is traveling through the 8 ohm resistor (R1) towards ground. But when I build the circuit on multi-sim it says that I1 is traveling through (R1) upwards "clockwise. I'm confused why the book says I1 is counter clockwise and my simulator says clockwise.


R1 = 8 ohm R2 = 4 ohm R3 = 10 ohm I = 2A E = 64V


I thought I2 and I add up to I1. I'm so confused. How do I determine the direction of the current so I can build my equation. I always seem to be confused on how to determine the direction of the current. Does it matter? I"m still very confused on node analysis.


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