Q177 / 180 · KCET 2023 · Physics

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

Correct answer
A
Zero
B
$\pi$
C
$\frac{\pi}{4}$
D
$\frac{\pi}{2}$

Solution

In $L-C-R$ series resonance circuit, $X_L=X_C$ $\therefore \tan \phi=\frac{X_L-X_C}{R}=\frac{0}{R}=0$ $\Rightarrow \quad \phi=0^{\circ}$

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

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