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1. The problem statement, all variables and given/known data

I am asked to find p1, p2, p3, p4.

2. Relevant equations

p=vi

ƩP=0

3. The attempt at a solution

p1=(5)(-9)

=-45

p2=(2)(9)

=18

p4=(3)(5)

=15

p3=v(.6i)

=v(.6(4))

=v(2.4)

I know that v=5 and p3=12, but I don't know why v=5.

I do perfectly fine finding p1, p2, and p4, but I am having difficulty figuring out how to find the voltage on p3 to get the power. I am trying to refrain from using the law of the conservation of energy (ƩP=0), since a previous example I tried to figure out before gave me the same problem.

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# Fundamentals of Electrical Engineering Circuit Basics Question

**Physics Forums | Science Articles, Homework Help, Discussion**