AP EAMCET · PHYSICS · Alternating Current
A resonant frequency of a circuit is . If the capacitance is made four times the initial value, then the resonant frequency will become
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Resonance frequency of an L-C circuit is the frequency when the intensity of current is maximum in the circuit. Resonant frequency, f=12πLC f∝1C or f1f2=C2C1 Now, if the capacitance is made four times the initial value, ff2=4CC⇒f2=f2
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