CUET · PHYSICS · PYQ PAPER 2025
In an a.c. circuit, a resistor, a capacitor and an inductor are connected in series, in which \( X_C = X_L = R \). The impedance of this circuit will be
- A \( R\sqrt{5} \)
- B \( R\sqrt{2} \)
- C R
- D zero
Answer & Solution
Correct Answer
(C) R
Step-by-step Solution
Detailed explanation
\(Z = \sqrt{R^2 + (X_L - X_C)^2}\) \(Z = \sqrt{R^2 + (R - R)^2}\) \(Z = \sqrt{R^2 + 0^2}\) \(Z = R\)
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