Electricians Forum | Electrical Advice Forum | An electrical forum for electricians in the UK - View Single Post

eskimo39 · 06-07-2009

I thought when working out impediance you needed first to work out both Inductive Resistance and then Capacitive resistance.

Inductive Resistance is:

XL = 2*pi*f*L

Where f is Frequency (Hz) and L is Inductance (H)

Capacitive Resistance is:

XC =

1
-------------
2*pi*f*C

Where f is Frequency and C is capacitance (farads)

You then need the formular : Z = Sqrt R2 + (XL - XC)2

Is this correct?

06-07-2009	#6 (permalink)
eskimo39 Senior Member Join Date: Sep 2008 Posts: 264 Thanks: 2 Thanked 17 Times in 14 Posts	Re: Working out Impediance need help! I thought when working out impediance you needed first to work out both Inductive Resistance and then Capacitive resistance. Inductive Resistance is: XL = 2pifL Where f is Frequency (Hz) and L is Inductance (H) Capacitive Resistance is:* XC = 1 ------------- 2pifC Where f is Frequency and C is capacitance (farads) You then need the formular : Z = Sqrt R2 + (XL - XC)2* Is this correct? Last edited by eskimo39; 06-07-2009 at 12:34 AM..