Assertion: In series `L-R` circuit voltage leads the current.
Reason: In series `L-C` circuit leads the voltage.

The current in the series L-C-R circuit is

Assertion : In series L-C-R circuit, voltage will lead the current function for frequency greater than the resonance frequency. Reason : At resonance frequency, phase difference between current function and voltage function is zero.

Assertion : In series L-C-R circuit, voltage will lead the current function for frequency greater than the resonance frequency. Reason : At resonance frequency, phase difference between current function and voltage function is zero.

Assertion (A) : when capacitive reactance is less than the inductive reactance in a series LCR circuit, e.m.f. leads the current. Reason (R) : The angle by which alternating voltage leads the alternating current in series RLC circuit is given by tan varphi = (X_(L) - X_(C))/(R) .

The phase difference between voltage and current in series L-C circuit is

The phase difference between voltage and current in series L-C circuit is

Assertion : In series L-C-R, AC circuit, current and voltage are in same phase at resonance. Reason : In series L-C-R, AC circuit, resonant frequency does not depend on the value of resistance. Hence, current at resonance does not depend on resistance.

Assertion : In series L-C-R, AC circuit, current and voltage are in same phase at resonance. Reason : In series L-C-R, AC circuit, resonant frequency does not depend on the value of resistance. Hence, current at resonance does not depend on resistance.