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Question: Answered & Verified by Expert
In series $L C R$ circuit at resonance, the phase difference between voltage and current is
PhysicsAlternating CurrentKCETKCET 2023
Options:
  • A Zero
  • B $\pi$
  • C $\frac{\pi}{4}$
  • D $\frac{\pi}{2}$
Solution:
2714 Upvotes Verified Answer
The correct answer is: Zero
In $L-C-R$ series resonance circuit,
$X_L=X_C$
$\therefore \tan \phi=\frac{X_L-X_C}{R}=\frac{0}{R}=0$
$\Rightarrow \quad \phi=0^{\circ}$

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