MHT CET 2025 Physics question
A resistance, 10mH inductance coil and 15F capacitor are joined in series. When a suitable frequency alternating current source is joined to this combination, the circuit resonates. If the resistance is made rd, the resonant frequency
Answer: (A)
Solution
In a series LCR circuit, resonance occurs when , giving . This depends only on and , not on . Since and are not changed, the resonant frequency remains unchanged, option (A). Changing only
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