The topic was actually meant to be 'resistance and electromagnetic oscillation'.
It is hard to translate specific words. I hope you understand what I meant.
I have an oscillating circuit. The data I know are:
Capacitance C=20*10^(-6) F
Inductance L=180*10^(-6) H
Attenuation (logaritmic decrement) = 1,4*Pi
What is resistance and period ?
There should be two periods, for example T and T_0.
If T_0=2*Pi*square root of(L*C), then what is T ?
I believe that it is possible to find the resistance using formula which relates damping factor to resistance and inductance. Damping factor = R/2L
Resistance should be 3,4 according to book.
I see now. Your T0 is not actually a period in the circuit, it's due to the resonant frequency of the circuit. (At least in Intro Physics we don't normally talk about the period of this frequency which is why I didn't understand what you were referring to.)
I'm afraid I still can't give you an answer though. I've looked through my material (and a Google search) and can't find a formula for the attenuation. It must somehow be related to the damping factor (R/(2L)), but I don't know what the precise relationship is.
-Dan
I can honestly say I've never seen that equation before. (I don't claim any great knowledge about circuits.)
So it looks to me that you have two equations in two unknowns:
From the first equation
So inserting this into the second equation:
Now solve for R.
I get
Thus
-Dan