JEE Mains · Physics · STD 12 -7. Alternating current
Find the peak current and resonant frequency of the following circuit (as shown in figure).
- A \(0.2\, A\) and \(50 \,Hz\)
- B \(0.2\, A\) and \(100\, Hz\)
- C \(2\, A\) and \(100\, Hz\)
- D \(2\, A\) and \(50\, Hz\)
Answer & Solution
Correct Answer
(A) \(0.2\, A\) and \(50 \,Hz\)
Step-by-step Solution
Detailed explanation
as given \(z=\sqrt{\left(x_{L}-x_{C}\right)^{2}+R^{2}}\) \(x _{ L }=\omega_{ L }=100 \times 100 \times 10^{-3}=10 \, \Omega\) \(x _{ C }=\frac{1}{\omega_{ C }}=\frac{1}{100 \times 100 \times 10^{-6}}=10\, \Omega\) \(z=\sqrt{(10-100)^{2}+R^{2}}=\sqrt{90^{2}+120^{2}}\)…
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