In an alternating current circuit consisting of element in series, the current increases on increasing the frequency of supply. Among of the following elements, the ones that are likely to constitute the circuit is ?

In a circuit consisting of a capacitance and a generator with alternating emf, $E_g=E_{go}sin\omega t, V_C$ and $I_{\mathit{C}}$ are the voltage and current. Correct phasor diagram for such circuit is

A parallel combination of pure inductor and capacitor is connected across a source of alternating EMF $e$. The currents flowing through an inductor and capacitor are $i_L$ and $i_C$ respectively. In this parallel resonant circuit, the condition for currents $i$ $,i_L$ and $i_C$ is ($i=$net RMS current in the circuit)

If the input voltage $V_{\mathrm{i}}$ to the circuit below is given by $V_{\mathrm{i}}\left(t\right)=A\cos \left(2\pi ft\right)\text{,}$ the output voltage is given by $V_{\mathrm{o}}\left(t\right)=B\cos \left(2\pi ft+\varphi \right)$.

Which one of the following four graphs best depict the variation of $\varphi$ vs $f$?

An AC voltmeter connected between points $A$ and $B$ in the circuit below reads $36 \mathrm{V}.$ If it is connected between $A$ and $C,$ the reading is $39 \mathrm{V}.$ The reading when it is connected between $B$ and $D$ is $25 \mathrm{V}$. What will the voltmeter read when it is connected between $A$ and $D?$ ( Assume that the voltmeter reads true RMS voltage values and that the source generated a pure AC.)