In an L-C-R series circuit, at resonance

Options

A. a)the current and voltage are in phase
B. b)the impedance is maximum
C. c)the current is minimum
D. d)the quality factor is independent of R

Answer

A

Explanation

The condition for resonance, when`omega L = (1)/(omega C),` then tan `phi=0,` that is, `phi=0. `In this case, the current (i) and voltage (V) are in phase.