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RLC Circuits and Resonance

Q1:

A 200  resistor, a coil with 30  of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance

A is 230 

B is 170 

C is 200 

D cannot be determined

ANS:C - is 200 

At resonance, XL = XC.

So, since XL is given to be 30ohs, XC should be 30ohms as well. This is what I think and I see something different can anyone clarify me, please.



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