First slide

AC Circuits

Question

In the given figure, which voltmeter will read zero voltage at resonant frequency $ω$

Easy

A

$V_{1}$
B

$V_{2}$
C

$V_{3}$
D

$V_{4}$

Solution

At resonance the potential difference across the inductor and the capacitor are equal and $180^{\circ}$ out of phase and therefore, cancel out each other. So the $V_{4}$ reads zero voltage.
Therefore, the correct answer is ( D )

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