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Alternating Current question

2022 · 28 Jul · Shift 1 · Q59
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Alternating Current question

2022 · 28 Jul · Shift 1 · Q59

JEE MainPhysicsAlternating CurrentMCQ+4 / −1
The equation of current in a purely inductive circuit is 5sin⁡(49 πt−30∘)5 \sin \left(49\, \pi t-30^{\circ}\right)5sin(49πt−30∘). If the inductance is 30 mH30 \,\mathrm{mH}30mH then the equation for the voltage across the inductor, will be : {\left\{\right.{ Let π=227}\left.\pi=\frac{22}{7}\right\}π=722​}
  1. A
    1.47sin⁡(49πt−30∘)1.47 \sin \left(49 \pi t-30^{\circ}\right)1.47sin(49πt−30∘)
  2. B
    1.47sin⁡(49πt+60∘)1.47 \sin \left(49 \pi t+60^{\circ}\right)1.47sin(49πt+60∘)
  3. C
    23.1sin⁡(49πt−30∘)23.1 \sin \left(49 \pi t-30^{\circ}\right)23.1sin(49πt−30∘)
  4. D
    23.1sin⁡(49πt+60∘)23.1 \sin \left(49 \pi t+60^{\circ}\right)23.1sin(49πt+60∘)
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