- #1
libelec
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This is a piece of circuit:
.
I2 = 2A, I1 = 4A, R = 10[tex]\Omega[/tex], VB - VC = 12V. Find Iy (that goes over Ry), Rx, Ry and VA - VD
I can find Rx pretty easily, using that VB - VC = 12V, then, since V= IR, VB - 10 V - I2*Rx - VC = 0.
I also find, using the same fact, that Iy*Ry = VB - VC = 12V (going through the lower branch that joins B and C).
But I can't see how I can get Iy. I know that in B (node), there's I1 and Iy AND another current (be it I3) that should go towards the 10V battery next to B. I also believe that I2 = I3 + I4, where I4 is current generated by the 10 V battery.
Now, I know the last sentence must have something wrong with it, because in the exercise the first thing they ask to find is Iy, so it should come out fast. My problem is that I have been having trouble with the currents and their directions (how to predict this).
My question is: can part of the current I1 go through the battery and aid forming I2? What am I missing?
Thanks
I2 = 2A, I1 = 4A, R = 10[tex]\Omega[/tex], VB - VC = 12V. Find Iy (that goes over Ry), Rx, Ry and VA - VD
The Attempt at a Solution
I can find Rx pretty easily, using that VB - VC = 12V, then, since V= IR, VB - 10 V - I2*Rx - VC = 0.
I also find, using the same fact, that Iy*Ry = VB - VC = 12V (going through the lower branch that joins B and C).
But I can't see how I can get Iy. I know that in B (node), there's I1 and Iy AND another current (be it I3) that should go towards the 10V battery next to B. I also believe that I2 = I3 + I4, where I4 is current generated by the 10 V battery.
Now, I know the last sentence must have something wrong with it, because in the exercise the first thing they ask to find is Iy, so it should come out fast. My problem is that I have been having trouble with the currents and their directions (how to predict this).
My question is: can part of the current I1 go through the battery and aid forming I2? What am I missing?
Thanks