JEE Main · PhysicsHard
In an LCR series circuit, the resonance frequency is $f_0$. If the capacitor is replaced by two capacitors of the same capacitance connected in parallel, the new resonance frequency becomes:
- A.$f_0/2$
- B.$\sqrt{2}f_0$
- C.$f_0/\sqrt{2}$
- D.$2f_0$
Show correct answer & step-by-step solution
Correct answer: B — $\sqrt{2}f_0$
Solution
When two capacitors of capacitance are connected in parallel, the equivalent capacitance becomes . Since the resonance frequency , the new frequency is .
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