Circuits (Power and Complex Power) Help

[funk21]

Homework Statement

Homework Equations

The Attempt at a Solution

I am just lost on these two problems. What I think on the first one is that I have to convert the voltage but from there I am lost. I am guessing I also have to figure the current.

For the second problem, I know that S = P + Q. I am just lost on the other ones.

Thanks for the help.

 

[rock.freak667]

Well you should know that Z=R+jX and I=V/Z, so find that and convert that into polar/Cartesian form.

 

[mplayer]

For the second part, try drawing out a 'power triangle' and thinking about what each of the three sides represent.