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JEE Mains · Physics · STD 12 -7. Alternating current

एक ज्यावक्रीय वोल्टता \(V ( t )=100 \sin (500 t )\) एक विशुद्ध प्रेरकत्व \(L =0.02\; H\) पर लगाई जाती है। कुण्डली से प्रवाहित धारा है

  1. A \(10\,cos\,(500t)\)
  2. B \(-10\,cos\,(500t)\)
  3. C \(10\,sin\,(500t)\)
  4. D \(-10\,sin\,(500t)\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(-10\,cos\,(500t)\)

Step-by-step Solution

Detailed explanation

In a pure inductive circuit current always lags behind the emf by \(\frac{\pi}{2}\) If \(v(t)=v_{0} \sin \omega t\) then \(\mathrm{I}=\mathrm{I}_{0} \sin \left(\omega \mathrm{t}-\frac{\pi}{2}\right)\) Now, given \(v(t)=100 \sin (500 \,t)\) and…
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