The variation of the instantaneous current \( (I) \) and the \( \ma...

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The variation of the instantaneous current \( (I) \) and the
\( \mathrm{P} \) instantaneous \( \operatorname{emf}(E) \) in a circuit is as shown in fig.

W Which of the following statements is correct
(1) The voltage lags behind the current by \( \pi / 2 \)
(2) The voltage leads the current by \( \pi / 2 \)
(3) The voltage and the current are in phase
(4) The voltage leads the current by \( \pi \)
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