# Determine phasor

Discussion in 'Homework Help' started by rogerloh4.0, Nov 9, 2012.

1. ### rogerloh4.0 Thread Starter New Member

Sep 26, 2012
10
0
Q: Determine the phasor current I1 and I2 in the circuit of the figure

Ans: I1=3.578$\angle86.57^{\circ}$

Following is my solution, I don't know what I have done wrong, but the answer is different with the ones provided by the book.

20$\angle60^{\circ}$=(5+j5)I1-j6I2+j3I2-j6I1=(5-j)I1-j3I2

j2I2-j6I1+j3I1=0

j2I2=j3I1

(5-j5.5)I1=20$\angle60^{\circ}$

That should lead me to I1=2.69$\angle107.726^{\circ}$