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RLC Circuits and Resonance

Q1: When XC = XL the circuit:

A draws maximum current

B applied voltage is zero

C is at resonance

D draws minimum current

ANS:C - is at resonance

When Xc = Xl,
Z = sqrt(R^2+(Xl - Xc)^2)
Hence, Z = R.

i.e. Impedance = Resistance

Hence circuit is at resonance.



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