Question

The equation of current in a purely inductive circuit is $5 \sin \left(49 \pi t -30^{\circ}\right)$ If the inductance is $30\, mH$ then the equation for the voltage across the inductor, will be: \left\\{\text { Let } \pi=\frac{22}{7}\right\\}

• A. $1.47 \sin \left(49 \pi t -30^{\circ}\right)$
• B. $1.47 \sin \left(49 \pi t +60^{\circ}\right)$
• C. $23.1 \sin \left(49 \pi t -30^{\circ}\right)$
• D. $23.1 \sin \left(49 \pi t+60^{\circ}\right)$

Answer 1

Answer: (D)

$23.1 \sin \left(49 \pi t+60^{\circ}\right)$

Answer 2

From the given options the correct answer is option (D): $23.1sin (49 \pi t + 60°)$