Homework Help: PHYSICS

Posted by anonymous on Sunday, February 24, 2013 at 7:05pm.

In a series RCL circuit the generator is set to a frequency that is not the resonant frequency. This nonresonant frequency is such that the ratio of the inductive reactance to the capacitive reactance of the circuit is observed to be 5.53. The resonant frequency is 220 Hz. What is the frequency of the generator?

PHYSICS - bobpursley, Sunday, February 24, 2013 at 7:12pm
Xl/Xc=2PIfl*2PI*f*C= (2PI f)^2 LC

but 220=1/2pi sqrt LC
or LC=1/(2PI*220)^2

so we now have

5.53=(2PIf)^2/(2PI*220)^2 = f^2/220^2
solve for f.

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