Finding power and complex power in AC circuits

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funk21
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Homework Statement


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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.
 

Discussion

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Well you should know that Z=R+jX and I=V/Z, so find that and convert that into polar/Cartesian form.
 
For the second part, try drawing out a 'power triangle' and thinking about what each of the three sides represent.