WBJEE · Physics · Alternating Current
When the frequency of the \(A C\) voltage applied to a series LCR circuit is gradually increased from a low value, the impedance of the circuit
- A monotonically increases
- B first increases and then decreases
- C first decreases and then increases
- D monotonically decreases
Answer & Solution
Correct Answer
(B) first increases and then decreases
Step-by-step Solution
Detailed explanation
The impedance of LCR circuit \(Z=\sqrt{R^{2}+\left(\omega_{c}-\frac{1}{\omega_{c}}\right)^{2}}\) Where, \(R=\) Resistance \(L=\) Inductance \(C=\) Capacitance When frequency of AC voltage applied to a series LCR circuit, it will first increase and resonance state…
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