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

An oscillating \(LC\) circuit consists of a \(75\,mH\) inductor and a \(1.2\,\mu F\) capacitor. If the maximum charge to the capacitor is \(2.7\,\mu C\). The maximum current in the circuit will be \(...........\,mA\).

  1. A \(8\)
  2. B \(9\)
  3. C \(6\)
  4. D \(5\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(9\)

Step-by-step Solution

Detailed explanation

Maximum energy stored in capacitor is same as maximum energy stored in inductor. \(\frac{1}{2} Li _{\max }^2=\frac{1}{2} \frac{ Q _{\max }^2}{ C }\) \(i _{\max }=\sqrt{\frac{1}{ LC }} Q _{\max }\)…