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eehelp150

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## Homework Statement

Calculate the complex power delivered by the source

V = 12cos(wt) V

V = 12cos(wt) V

## Homework Equations

V = IR

## The Attempt at a Solution

1. I combined 8ohm resistor and 8j ohm inductor in parallel to get 4+4j ohms

2. I combined that with 4ohm resistor in series to get a Zth of 8+4j ohms

3. V = IR -> I = V/R = 12/(8+4j) amps

4. I = 6/5 - 3i/5

Complex power = V * I conjugate =

12 * (6/5 + 3i/5)

= 14.4 + 7.2i

Did I do this right?