Calculate Ix Using Tellegen's Theorem: -2A

[octavio10]

1. Find the current Ix using Tellegen's theorem2. P=VI3. 10*-Ix+ 15*2 +15*-2+10*2=0
-10Ix=-20
Ix=2A
But the answer is -2A.

 

[NascentOxygen]

Please explain each term in the equation you've written, and why you omitted some terms.