Physics · 2022
JEE Main · 28 July 2022, Shift 1 · Q44
The equation of current in a purely inductive circuit is 5 sin (49 π t -30^°). If the inductance is 30 mH then the equation for the voltage across…
The equation of current in a purely inductive circuit is $\displaystyle 5 \sin \left(49 \pi \mathrm{t}-30^{\circ}\right)$. If the inductance is $\displaystyle 30$ mH then the equation for the voltage across the inductor, will be :
$$\left\{\text { Let } \pi=\frac{22}{7}\right\}
$$
Official answer
(4)
$\displaystyle 23.1 \sin \left(49 \pi \mathrm{t}+60^{\circ}\right)$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.