Easy
$A$ $10 \Omega$ resistance,$5 \ mH$ coil,and $10 \ \mu F$ capacitor are joined in series. When an alternating current source of suitable frequency is joined to this combination,the circuit resonates. If the resistance is halved,the resonant frequency is
- Aquadrupled.
- Bhalved.
- Cdoubled.
- Dremains unchanged.
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