- #1
Guillem_dlc
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- 17
Homework Statement
In the circuit of the figure, determine the intensities I1, I2, I3, I4, I5 and the voltage Ug.
Homework Equations
Superposition and Kirchoff
The Attempt at a Solution
20-10I1+5I3-10I1=0
5I3+Ug+5I5=0
20I2+10I2-150=0
From the last equation, 30I2 = 150, I2 = 5 A
KNOTS:
-10-I4-5=0 I4=-15 A
-I5+(-15)+5=0 I5=-10 A
System of knot equations of I3 and I5 does not work
-10-I1-I3=0
I3+I1-10=0
I3=-10-I1
-10-I1+I1-10=0 -20≠0
Here I have stayed, the part of the left is what resists me