The following figure shows the phasor diagram for a series LCR circuit.
STATEMENT-1 : In the given circuit, the driving angular frequency is greater than resonant angular frequency.
STATEMENT-2 : At resonant angular frequency, current and e.m.f. are in phase with each other.

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Statement -1 is true, statement -2 is false.

Statement -1 is true, statement -2 is true; statement -2 is the correct explanation for statement -1.

Statement -1 is true, statement -2 is true; statement -2 is NOT the correct explanation for statement -1.

Statement -1 is false, Statement -2 is true.

answer is D.

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Detailed Solution

Applied $e m f e = e_{0} \sin ω t$

Produced current $I = I_{0} \sin (ω t - ϕ)$ where $\tan ϕ = \frac{ω L - \frac{1}{ω C}}{R}$

If $ω > ω_{r e s}$ then $\tan ϕ > 0 \Rightarrow 0 < ϕ < \frac{π}{2}$ current lags behind e. But in given graph, ‘I’ leads ahead of e. So ‘1’ is wrong statement

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