Electrical Engineering - RLC Circuits and Resonance - Discussion

Discussion :: RLC Circuits and Resonance - General Questions (Q.No.6)

6. 

The impedance at the resonant frequency of a series RLC circuit with L = 20 mH, C = 0.02 F, and RW = 90 is

[A]. 0
[B]. 90
[C]. 20 k
[D]. 40 k

Answer: Option B

Explanation:

No answer description available for this question.

Chithra said: (Nov 17, 2011)  
At resonant frequency, Z=R (since L=C)

Prasanthi said: (Jan 26, 2012)  
Minimum impedance at resonannce frequency z= sqrt(r8r + (xl -xc )power2 = r
wl = wl;xc = 1/wc;w =1/ sqrt(lc);

Arun said: (Jun 5, 2015)  
In series circuit at resonance Z=R. Hence Z=R=90 ohm.

Sk Mybelli said: (Oct 18, 2015)  
At resonance Xl = Xc, Z = R enough.

Abhay said: (Oct 19, 2015)  
At resonance xl = xc and that's why xl-xc = 0, so z = R.

Sweety said: (Aug 30, 2018)  
At resonance Xl = Xc, Z = R.

Kikani Dixita said: (Oct 21, 2019)  
RLC series in Resonant frequency :Z = R.
In Resonant position *(L=C).

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