(B) In a pure inductive circuit,the voltage $V$ across the inductor leads the current $I$ by a phase angle of $90^{\circ}$ (or $\frac{\pi}{2}$ radians

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Lags behind the e.m.f. by $90^{\circ}$

(B) In a pure inductive circuit,the voltage $V$ across the inductor leads the current $I$ by a phase angle of $90^{\circ}$ (or $\frac{\pi}{2}$ radians).Conversely,this means the current $I$ lags behind the electromotive force (e.m.f.) by $90^{\circ}$.Mathematically,if $V = V_m \sin(\omega t)$,then $I = I_m \sin(\omega t - 90^{\circ})$.Therefore,the current lags behind the e.m.f. by $90^{\circ}$.

Class 12 Physics Alternating Current Only Inductor, Only Capacitor and Only Resistor Circuit

Easy

In a pure inductive circuit or in an $ac$ circuit containing inductance only,the current

A
Leads the e.m.f. by $90^{\circ}$
B
Lags behind the e.m.f. by $90^{\circ}$
C
Sometimes leads and sometimes lags behind the e.m.f.
D
Is in phase with the e.m.f.

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Alternating Current

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Only Inductor, Only Capacitor and Only Resistor Circuit

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Medium

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In a pure inductive circuit or in an $ac$ circuit containing inductance only,the current

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