$A$ coil of inductive reactance $31\,\Omega$ has a resistance of $8\,\Omega$. It is placed in series with a capacitor of capacitive reactance $25\,\Omega$. The combination is connected to an $A$.$C$. source of $110\,V$. The power factor of the circuit is:

  • A
    $0.33$
  • B
    $0.56$
  • C
    $0.64$
  • D
    $0.80$

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