LCR Circuit Questions

To an ac power supply of $220\text{V}$ at $50\text{Hz}$, a resistor of $20\Omega$, a capacitor of reactance $25\Omega$ and an inductor of reactance $45\Omega$ are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively:

Power dissipated in an LCR series circuit connected to an a.c source of emf $ϵ$ is:

In the given circuit the reading of voltmeter $V_1$ and $V_2$ are $300\text{ volts}$ each. The reading of the voltmeter $V_3$ and ammeter $A$ are respectively:

Which of the following combinations should be selected for better tuning of an L-C-R circuit used for communication?