Question

An LCR circuit is connected to a source of alternating current. At resonance, the applied voltage and the current flowing through the circuit will have a phase difference of

• A. $\pi$/4
• B. zero
• C. $\pi$
• D. $\pi$/2

Answer 1

The correct option is B zero

At resonance, $Z$ is minumum

$w=\frac{1}{\sqrt{LC}}$

$\therefore Z=R$

and, now, circuit becomes pure resistive
$\therefore$ current and voltage comes in phase