The equation of current in a purely inductive circuit \( \mathrm{P}...

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The equation of current in a purely inductive circuit
\( \mathrm{P} \)
is \( 5 \sin \left(49 \pi t-30^{\circ}\right) \). If the inductance is \( 30 \mathrm{mH} \)
W
then the equation for the voltage across the inductor, will be \( \left\{\right. \) Let \( \left.\pi=\frac{22}{7}\right\} \)
(1) \( 1.47 \sin \left(49 \pi t-30^{\circ}\right) \)
(2) \( 1.47 \sin \left(49 \pi t+60^{\circ}\right) \)
(3) \( 23.1 \sin \left(49 \pi t-30^{\circ}\right) \)
(4) \( 23.1 \sin \left(49 \pi t+60^{\circ}\right) \)
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