An inductor of 0.5 mH, a capacitor of $200\mu\mathrm{F}$ and a resistor of $2\Omega$ are connected in series with a 220 V ac source. If the current is in phase with the emf, the frequency of ac source will be $\_\_\_\_$ $\times 10^2$ Hz.
An inductor of 0.5 mH, a capacitor of $200\mu\mathrm{F}$ and a resistor of $2\Omega$ are connected in series with a 220 V ac source. If the current is in phase with the emf, the frequency of ac source will be $\_\_\_\_$ $\times 10^2$ Hz.