What is acceptor circuit and state its use ?

A parallel plate capacitor in series with a resistance of $100 \mathrm{\Omega },$ an inductor of $20 \mathrm{mH}$ and an $AC$ voltage source of variable frequency shows resonance at a frequency of $\frac{1250}{\pi }\mathrm{Hz}$. If this capacitor is charged by a $DC$ voltage source to a voltage $25 \mathrm{V},$ what amount of charge will be stored in each plate of the capacitor?

In the above circuit, $C=\frac{\sqrt{3}}{2}\mu F,R_2=20\mathrm{ \Omega },L=\frac{\sqrt{3}}{10}H$ and $R_1=10\mathrm{ \Omega }.$ Current in $L\text{-}{R}_1$ path is $I_1$ and in $C-R_2$ path it is $I_2.$ The voltage of $$AC source is given by, $V=200\sqrt{2}\sin \left(100t\right)$ volts. The phase difference between $I_1$ and $I_2$ is:

In the given circuit, the resonant frequency is

Find the peak current and resonant frequency of the following circuit (as shown in figure).

The readings of ammeter and voltmeter in the following circuit are respectively