hi all,

I have an RLC parallel circuit with a capacitor in parallel with a resistor / inductor in series ( representing a coil ). There is a 1v peak AC supply and I need to calculate the voltages, currents, angles etc and draw the resultant phasor.

When calculating the current in the resistor / inductor branch do I use the 1v peak supply stated or convert to rms (*0.707) first of all.

Irl = 1 / z or Irl = 0.707 / z

The same applies to the capacitor current

Ic = 1 / Xc or Ic = 0.707 / Xc

As stated I need these values to be correct to draw the resultant phasor diagram

Thanks in advance

 

Maybe I didnt explain very well I attach a quick sketch of the circuit.
I wish to know if the calculations and resultant phasor should be drawn using the peak supply voltage or the rms supply voltage.

 

Probably doesn't really matter if you draw the phasors in peak or rms as long as you are consistent - using either one or the other - not a 'mixture'.

Convention normally assumes one is using rms values.