In an $LCR$ series circuit,if $R = X_L = 2X_C$,find the impedance and the phase difference between the current and the voltage.

  • A
    $\frac{\sqrt{5}R}{2}, \tan^{-1}(2)$
  • B
    $\frac{\sqrt{5}R}{2}, \tan^{-1}\left(\frac{1}{2}\right)$
  • C
    $\sqrt{5}X_C, \tan^{-1}(2)$
  • D
    $\sqrt{5}R, \tan^{-1}\left(\frac{1}{2}\right)$

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