CUET · PHYSICS · PYQ PAPER 2023
A resistor, an inductor and a capacitor are connected in series with a variable frequency source of alternating emf. At resonance, the amplitude of current depends on :
(A) Resistance
(B) Inductance
(C) Capacitance
(D) Frequency of source
Choose the correct answer from the options given below :
- A (A) only
- B (A) and (D) only
- C (A), (B) and (C) only
- D (D) only
Answer & Solution
Correct Answer
(A) (A) only
Step-by-step Solution
Detailed explanation
At resonance, \(X_L = X_C\). \(Z = R\). \(I_{max} = \frac{V_{max}}{Z} = \frac{V_{max}}{R}\). The amplitude of current depends on Resistance (A).
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