Homework Help: AC power calculations:

1. Nov 9, 2009

Dissonance in E

Hi, im a bit lost with AC circuits on the whole and could use some dumbed down explanation on the matter.

Taking an example from course material:

(Components connected in parallel. "Ladder connection")

------
l l l l l
J C L R
l l l l l
------

Where
J = 1 (30 degrees) currentsource driving current in the clockwise direction
C = 0.05 F capacitor
L = 0,2 H inductor
w = 10 rad/s

If im asked to find the real and reactive powers for each component how would i go about solving these?
I could also use a clarification on the difference between real and reactive powers.

Thanks.

ps: sory for the dingy "diagram"
Edit/Delete Message

2. Nov 9, 2009

tiny-tim

Hi Dissonance in E!

Reactive power is just the imaginary part of the complex power, which is the (instantaneous) voltage times current.

(and reactive or imaginary power involves no net transfer of energy)

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook