Question

A pure resistance R, pure capacitance C and pure inductance L are connected in series and the impedance of the circuit at resonance is Z_o. If they are connected in parallel to each other, the maximum impedance at resonance will be:

• A. Less than R
• B. Equal to Z_o
• C. More than R
• D. dependent on the values of C and L

Answer 1

The correct option is B

Equal to Z_o

At resonance for series LCR circuit, minimum impedance is Z_o=R and for resonant parallel RCL circuit, the maximum impedance is R.