WBJEE · Physics · Alternating Current
In the circuit shown below, the switch is kept in position \(a\) for a long time and is then thrown to position \(b .\) The amplitude of the resulting oscillating current is given by
- A \(E \sqrt{L/C}\)
- B \(E / R\)
- C intinity
- D \(E \sqrt{C/L}\)
Answer & Solution
Correct Answer
(D) \(E \sqrt{C/L}\)
Step-by-step Solution
Detailed explanation
When switch is in position \(a\), then capacitor will be charged, such that Charge on capacitor, \(q=C E\) Energy stored in capacitor, \(U=q^{2} / 2 C\) When switch is in position \(b\), then circuit becomes an \(L C\) oscillator. Let amplitude of current in \(L C\) circuit be…
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