Choose correct statement if capacitance increases from zero (0) to infinity $\left(\infty \right)$:

(i) When capacitance is zero, circuit contains inductor and resistor and so the current will be zero and then it starts increasing to maximum value when X_L = X_C. After that, current will start decreasing when X_C > X_L.

(ii) ${\mathrm{V}}_1= \mathrm{i}\sqrt{\left({\mathrm{R}}^2 + {{\mathrm{X}}_{\mathrm{L}}}^2\right)}$

$\mathrm{i}=\frac{\mathrm{V}}{\sqrt{{\mathrm{R}}^2+{\left({\mathrm{X}}_{\mathrm{L}}-{\mathrm{X}}_{\mathrm{C}}\right)}^2}}$, ${\mathrm{X}}_{\mathrm{C}}=\frac{1}{\omega C}, \mathrm{C}$ is variable.

Here V₁ is directly proportional to i and will behave in same way as i changes.

(iii) Power factor, $\cos \mathrm{\varphi }=\frac{\mathrm{R}}{\mathrm{Z}}$, Z is decreasing first and then increases.

(iv) 
$$\begin{gathered} {\mathrm{V}}_1=\frac{\mathrm{V}\sqrt{\left({\mathrm{R}}^2 + {{\mathrm{X}}_{\mathrm{L}}}^2\right)}}{\sqrt{{\mathrm{R}}^2+{\left({\mathrm{X}}_{\mathrm{L}}-{\mathrm{X}}_{\mathrm{C}}\right)}^2}} \\ {\mathrm{V}}_1= \mathrm{V} \mathrm{when} {\mathrm{X}}_{\mathrm{C}} = 0 \\ {\mathrm{V}}_1 > \mathrm{V} \mathrm{when} {\mathrm{X}}_{\mathrm{L}} > \left|{\mathrm{X}}_{\mathrm{L}} - {\mathrm{X}}_{\mathrm{C}}\right| \\ {\mathrm{V}}_1 < \mathrm{V} \mathrm{when} {\mathrm{X}}_{\mathrm{L}} < \left|{\mathrm{X}}_{\mathrm{L}} - {\mathrm{X}}_{\mathrm{C}}\right| \end{gathered}$$,