Q132 / 180 · AIIMS 2011 · Physics

In series $L C R$ circuit, the phase difference between applied voltage and current is

  • Correct answer
    A
    positive when $X_L>X_C$
  • B
    positive when $X_C>X_L$
  • C
    $90^{\circ}$
  • D
    $0^{\circ}$

Solution

In series LCR circuit, the phase angle $\phi$ is given by $$ \tan \phi=\frac{X_L-X_C}{R} $$ When $X_L>X_C$, tan $\phi$ is positive. Therefore the phase difference is positive.

Hence, the correct answer is option: 'A'.

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