A choke coil of resistance $R$ and inductance $L$ is connected in series with capacitor $C$ and complete combination is connected to $\mathrm{a}.\mathrm{c}.$ voltage, Circuit resonates when angular frequency of supply is $\omega ={\omega }_0$.

(i) Find out relation between ${\omega }_0, L$ and $C$

(ii) What is phase difference between $V$ and $I$ at resonance, is it changes when resistance of choke coil is zero.